1461521265555 has 64 divisors (see below), whose sum is σ = 2566949761152. Its totient is φ = 705633976320.

The previous prime is 1461521265553. The next prime is 1461521265557. The reversal of 1461521265555 is 5555621251641.

It is an interprime number because it is at equal distance from previous prime (1461521265553) and next prime (1461521265557).

It is not a de Polignac number, because 1461521265555 - 2¹ = 1461521265553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1461521265553) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 24577939 + ... + 24637331.

It is an arithmetic number, because the mean of its divisors is an integer number (40108590018).

Almost surely, 2^{1461521265555} is an apocalyptic number.

1461521265555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1461521265555 is a deficient number, since it is larger than the sum of its proper divisors (1105428495597).

1461521265555 is a wasteful number, since it uses less digits than its factorization.

1461521265555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61848.

The product of its digits is 1800000, while the sum is 48.

The spelling of 1461521265555 in words is "one trillion, four hundred sixty-one billion, five hundred twenty-one million, two hundred sixty-five thousand, five hundred fifty-five".