2154214680020 has 24 divisors (see below), whose sum is σ = 4871839353864. Its totient is φ = 795402343296.

The previous prime is 2154214679957. The next prime is 2154214680043. The reversal of 2154214680020 is 200864124512.

It can be written as a sum of positive squares in 4 ways, for example, as 323838388624 + 1830376291396 = 569068^2 + 1352914^2 .

It is a super-2 number, since 2×2154214680020² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4142720279 + ... + 4142720798.

It is an arithmetic number, because the mean of its divisors is an integer number (202993306411).

Almost surely, 2^{2154214680020} is an apocalyptic number.

2154214680020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2154214680020 is an abundant number, since it is smaller than the sum of its proper divisors (2717624673844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2154214680020 is a wasteful number, since it uses less digits than its factorization.

2154214680020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8285441099 (or 8285441097 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 35.

The spelling of 2154214680020 in words is "two trillion, one hundred fifty-four billion, two hundred fourteen million, six hundred eighty thousand, twenty".