634502221038 has 24 divisors (see below), whose sum is σ = 1571148357168. Its totient is φ = 181286348832.

The previous prime is 634502221033. The next prime is 634502221061. The reversal of 634502221038 is 830122205436.

634502221038 is a `hidden beast` number, since 634 + 5 + 0 + 2 + 2 + 2 + 10 + 3 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 634502220993 and 634502221011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634502221033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2517865831 + ... + 2517866082.

It is an arithmetic number, because the mean of its divisors is an integer number (65464514882).

Almost surely, 2^634502221038 is an apocalyptic number.

634502221038 is an abundant number, since it is smaller than the sum of its proper divisors (936646136130).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

634502221038 is a wasteful number, since it uses less digits than its factorization.

634502221038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5035731928 (or 5035731925 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 634502221038 in words is "six hundred thirty-four billion, five hundred two million, two hundred twenty-one thousand, thirty-eight".