251411216630 has 32 divisors (see below), whose sum is σ = 518423189760. Its totient is φ = 85992397920.

The previous prime is 251411216627. The next prime is 251411216687. The reversal of 251411216630 is 36612114152.

It is a congruent number.

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, 4256576 + ... + 4315235.

It is an arithmetic number, because the mean of its divisors is an integer number (16200724680).

Almost surely, 2^251411216630 is an apocalyptic number.

251411216630 is an abundant number, since it is smaller than the sum of its proper divisors (267011973130).

251411216630 is a wasteful number, since it uses less digits than its factorization.

251411216630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8572244.

The product of its (nonzero) digits is 8640, while the sum is 32.

The spelling of 251411216630 in words is "two hundred fifty-one billion, four hundred eleven million, two hundred sixteen thousand, six hundred thirty".