83905990502 has 4 divisors (see below), whose sum is σ = 125858985756. Its totient is φ = 41952995250.

The previous prime is 83905990463. The next prime is 83905990507. The reversal of 83905990502 is 20509950938.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83905990507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20976497624 + ... + 20976497627.

It is an arithmetic number, because the mean of its divisors is an integer number (31464746439).

Almost surely, 2^83905990502 is an apocalyptic number.

83905990502 is a deficient number, since it is larger than the sum of its proper divisors (41952995254).

83905990502 is a wasteful number, since it uses less digits than its factorization.

83905990502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41952995253.

The product of its (nonzero) digits is 874800, while the sum is 50.

The spelling of 83905990502 in words is "eighty-three billion, nine hundred five million, nine hundred ninety thousand, five hundred two".