83578087538 has 32 divisors (see below), whose sum is σ = 137736676800. Its totient is φ = 37720096960.

The previous prime is 83578087531. The next prime is 83578087543.

83578087538 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (83578087531) 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, 15512081 + ... + 15517467.

It is an arithmetic number, because the mean of its divisors is an integer number (4304271150).

Almost surely, 2^83578087538 is an apocalyptic number.

83578087538 is a deficient number, since it is larger than the sum of its proper divisors (54158589262).

83578087538 is a wasteful number, since it uses less digits than its factorization.

83578087538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10282.

The product of its (nonzero) digits is 45158400, while the sum is 62.

The spelling of 83578087538 in words is "eighty-three billion, five hundred seventy-eight million, eighty-seven thousand, five hundred thirty-eight".