451630939887 has 24 divisors (see below), whose sum is σ = 670252062480. Its totient is φ = 292932702720.

The previous prime is 451630939871. The next prime is 451630939901. The reversal of 451630939887 is 788939036154.

451630939887 is a `hidden beast` number, since 4 + 5 + 163 + 0 + 9 + 398 + 87 = 666.

It is not a de Polignac number, because 451630939887 - 2⁴ = 451630939871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451630939847) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4332664 + ... + 4435677.

It is an arithmetic number, because the mean of its divisors is an integer number (27927169270).

Almost surely, 2^451630939887 is an apocalyptic number.

451630939887 is a deficient number, since it is larger than the sum of its proper divisors (218621122593).

451630939887 is a wasteful number, since it uses less digits than its factorization.

451630939887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8768503 (or 8768500 counting only the distinct ones).

The product of its (nonzero) digits is 39191040, while the sum is 63.

The spelling of 451630939887 in words is "four hundred fifty-one billion, six hundred thirty million, nine hundred thirty-nine thousand, eight hundred eighty-seven".