8557138502 has 8 divisors (see below), whose sum is σ = 14002590312. Its totient is φ = 3889608400.

The previous prime is 8557138501. The next prime is 8557138517. The reversal of 8557138502 is 2058317558.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8557138501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194480399 + ... + 194480442.

It is an arithmetic number, because the mean of its divisors is an integer number (1750323789).

Almost surely, 2^8557138502 is an apocalyptic number.

8557138502 is a deficient number, since it is larger than the sum of its proper divisors (5445451810).

8557138502 is a wasteful number, since it uses less digits than its factorization.

8557138502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388960854.

The product of its (nonzero) digits is 336000, while the sum is 44.

The square root of 8557138502 is about 92504.8025888386. The cubic root of 8557138502 is about 2045.3902768381.

The spelling of 8557138502 in words is "eight billion, five hundred fifty-seven million, one hundred thirty-eight thousand, five hundred two".