2121847914368 has 64 divisors (see below), whose sum is σ = 5202607895520. Its totient is φ = 839412357120.

The previous prime is 2121847914341. The next prime is 2121847914391. The reversal of 2121847914368 is 8634197481212.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (56).

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, 91070423 + ... + 91093718.

Almost surely, 2^{2121847914368} is an apocalyptic number.

2121847914368 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2121847914368 is an abundant number, since it is smaller than the sum of its proper divisors (3080759981152).

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

2121847914368 is a wasteful number, since it uses less digits than its factorization.

2121847914368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182164175 (or 182164163 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 56.

The spelling of 2121847914368 in words is "two trillion, one hundred twenty-one billion, eight hundred forty-seven million, nine hundred fourteen thousand, three hundred sixty-eight".