1461261356656 has 10 divisors (see below), whose sum is σ = 2831193878552. Its totient is φ = 730630678320.

The previous prime is 1461261356609. The next prime is 1461261356669. The reversal of 1461261356656 is 6566531621641.

It is a happy number.

It is a super-2 number, since 2×1461261356656² (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 as a sum of consecutive naturals, namely, 45664417380 + ... + 45664417411.

Almost surely, 2^{1461261356656} is an apocalyptic number.

1461261356656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1461261356656 is a deficient number, since it is larger than the sum of its proper divisors (1369932521896).

1461261356656 is an equidigital number, since it uses as much as digits as its factorization.

1461261356656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91328834799 (or 91328834793 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 52.

The spelling of 1461261356656 in words is "one trillion, four hundred sixty-one billion, two hundred sixty-one million, three hundred fifty-six thousand, six hundred fifty-six".