61883974251 has 12 divisors (see below), whose sum is σ = 97514141400. Its totient is φ = 37505438880.

The previous prime is 61883974231. The next prime is 61883974259. The reversal of 61883974251 is 15247938816.

61883974251 is a `hidden beast` number, since 6 + 188 + 39 + 7 + 425 + 1 = 666.

It is not a de Polignac number, because 61883974251 - 2¹⁷ = 61883843179 is a prime.

It is a super-2 number, since 2×61883974251² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61883974259) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 312545226 + ... + 312545423.

It is an arithmetic number, because the mean of its divisors is an integer number (8126178450).

Almost surely, 2^61883974251 is an apocalyptic number.

61883974251 is a deficient number, since it is larger than the sum of its proper divisors (35630167149).

61883974251 is a wasteful number, since it uses less digits than its factorization.

61883974251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625090666 (or 625090663 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The spelling of 61883974251 in words is "sixty-one billion, eight hundred eighty-three million, nine hundred seventy-four thousand, two hundred fifty-one".