83505650538 has 32 divisors (see below), whose sum is σ = 171556217856. Its totient is φ = 27078003648.

The previous prime is 83505650509. The next prime is 83505650561.

83505650538 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1312695 + ... + 1374837.

It is an arithmetic number, because the mean of its divisors is an integer number (5361131808).

Almost surely, 2^83505650538 is an apocalyptic number.

83505650538 is an abundant number, since it is smaller than the sum of its proper divisors (88050567318).

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

83505650538 is a wasteful number, since it uses less digits than its factorization.

83505650538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68238.

The product of its (nonzero) digits is 2160000, while the sum is 48.

The spelling of 83505650538 in words is "eighty-three billion, five hundred five million, six hundred fifty thousand, five hundred thirty-eight".