634238051251 has 12 divisors (see below), whose sum is σ = 737806092552. Its totient is φ = 543618636288.

The previous prime is 634238051177. The next prime is 634238051269. The reversal of 634238051251 is 152150832436.

634238051251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 634238051251 - 2¹³ = 634238043059 is a prime.

It is a super-2 number, since 2×634238051251² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (634238052251) 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, 2059251 + ... + 2347123.

It is an arithmetic number, because the mean of its divisors is an integer number (61483841046).

Almost surely, 2^634238051251 is an apocalyptic number.

634238051251 is a deficient number, since it is larger than the sum of its proper divisors (103568041301).

634238051251 is a wasteful number, since it uses less digits than its factorization.

634238051251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332850 (or 332843 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 40.

Adding to 634238051251 its reverse (152150832436), we get a palindrome (786388883687).

The spelling of 634238051251 in words is "six hundred thirty-four billion, two hundred thirty-eight million, fifty-one thousand, two hundred fifty-one".