61631455453248 has 112 divisors (see below), whose sum is σ = 172661224847040. Its totient is φ = 19335076921344.

The previous prime is 61631455453181. The next prime is 61631455453279. The reversal of 61631455453248 is 84235455413616.

It is a super-2 number, since 2×61631455453248² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 430577340 + ... + 430720452.

Almost surely, 2^{61631455453248} is an apocalyptic number.

61631455453248 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

61631455453248 is an abundant number, since it is smaller than the sum of its proper divisors (111029769393792).

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

61631455453248 is a wasteful number, since it uses less digits than its factorization.

61631455453248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275084 (or 275074 counting only the distinct ones).

The product of its digits is 41472000, while the sum is 57.

The spelling of 61631455453248 in words is "sixty-one trillion, six hundred thirty-one billion, four hundred fifty-five million, four hundred fifty-three thousand, two hundred forty-eight".