8157417502638 has 32 divisors (see below), whose sum is σ = 16589652573312. Its totient is φ = 2673646768800.

The previous prime is 8157417502621. The next prime is 8157417502651. The reversal of 8157417502638 is 8362057147518.

It is a super-3 number, since 3×8157417502638³ (a number of 40 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38710933 + ... + 38921088.

It is an arithmetic number, because the mean of its divisors is an integer number (518426642916).

Almost surely, 2^{8157417502638} is an apocalyptic number.

8157417502638 is an abundant number, since it is smaller than the sum of its proper divisors (8432235070674).

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

8157417502638 is a wasteful number, since it uses less digits than its factorization.

8157417502638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77632320.

The product of its (nonzero) digits is 11289600, while the sum is 57.

The spelling of 8157417502638 in words is "eight trillion, one hundred fifty-seven billion, four hundred seventeen million, five hundred two thousand, six hundred thirty-eight".