83507213502 has 24 divisors (see below), whose sum is σ = 180938033640. Its totient is φ = 27834855120.

The previous prime is 83507213497. The next prime is 83507213539. The reversal of 83507213502 is 20531270538.

It is a happy number.

83507213502 is a `hidden beast` number, since 83 + 5 + 0 + 72 + 1 + 3 + 502 = 666.

It is a super-2 number, since 2×83507213502² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 773352 + ... + 874692.

It is an arithmetic number, because the mean of its divisors is an integer number (7539084735).

Almost surely, 2^83507213502 is an apocalyptic number.

83507213502 is an abundant number, since it is smaller than the sum of its proper divisors (97430820138).

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

83507213502 is a wasteful number, since it uses less digits than its factorization.

83507213502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147128 (or 147125 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The spelling of 83507213502 in words is "eighty-three billion, five hundred seven million, two hundred thirteen thousand, five hundred two".