634944024951 has 32 divisors (see below), whose sum is σ = 898153709568. Its totient is φ = 398288689920.

The previous prime is 634944024893. The next prime is 634944024973. The reversal of 634944024951 is 159420449436.

It is a happy number.

It is not a de Polignac number, because 634944024951 - 2⁹ = 634944024439 is a prime.

It is a super-2 number, since 2×634944024951² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 634944024894 and 634944024903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634944024151) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4866570 + ... + 4995336.

It is an arithmetic number, because the mean of its divisors is an integer number (28067303424).

Almost surely, 2^634944024951 is an apocalyptic number.

634944024951 is a deficient number, since it is larger than the sum of its proper divisors (263209684617).

634944024951 is a wasteful number, since it uses less digits than its factorization.

634944024951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130271.

The product of its (nonzero) digits is 3732480, while the sum is 51.

The spelling of 634944024951 in words is "six hundred thirty-four billion, nine hundred forty-four million, twenty-four thousand, nine hundred fifty-one".