857526038642 has 32 divisors (see below), whose sum is σ = 1609957641600. Its totient is φ = 333491217408.

The previous prime is 857526038639. The next prime is 857526038647. The reversal of 857526038642 is 246830625758.

It is not an unprimeable number, because it can be changed into a prime (857526038647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39918767 + ... + 39940242.

It is an arithmetic number, because the mean of its divisors is an integer number (50311176300).

Almost surely, 2^857526038642 is an apocalyptic number.

857526038642 is a deficient number, since it is larger than the sum of its proper divisors (752431602958).

857526038642 is a wasteful number, since it uses less digits than its factorization.

857526038642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79859090.

The product of its (nonzero) digits is 19353600, while the sum is 56.

The spelling of 857526038642 in words is "eight hundred fifty-seven billion, five hundred twenty-six million, thirty-eight thousand, six hundred forty-two".