1461297975552 has 54 divisors (see below), whose sum is σ = 4213282320702. Its totient is φ = 487099324416.

The previous prime is 1461297975521. The next prime is 1461297975589. The reversal of 1461297975552 is 2555797921641.

It is a happy number.

1461297975552 is a `hidden beast` number, since 1 + 4 + 6 + 1 + 2 + 9 + 7 + 9 + 75 + 552 = 666.

It can be written as a sum of positive squares in only one way, i.e., 775554990336 + 685742985216 = 880656^2 + 828096^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1461297975552.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 317119653 + ... + 317124260.

Almost surely, 2^{1461297975552} is an apocalyptic number.

1461297975552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1461297975552 is an abundant number, since it is smaller than the sum of its proper divisors (2751984345150).

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

1461297975552 is an equidigital number, since it uses as much as digits as its factorization.

1461297975552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634243935 (or 634243918 counting only the distinct ones).

The product of its digits is 47628000, while the sum is 63.

The spelling of 1461297975552 in words is "one trillion, four hundred sixty-one billion, two hundred ninety-seven million, nine hundred seventy-five thousand, five hundred fifty-two".