89978744502 has 12 divisors (see below), whose sum is σ = 194953946460. Its totient is φ = 29992914828.

The previous prime is 89978744441. The next prime is 89978744519. The reversal of 89978744502 is 20544787998.

89978744502 is a `hidden beast` number, since 8 + 9 + 9 + 7 + 87 + 44 + 502 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 89978744502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2499409552 + ... + 2499409587.

It is an arithmetic number, because the mean of its divisors is an integer number (16246162205).

Almost surely, 2^89978744502 is an apocalyptic number.

89978744502 is an abundant number, since it is smaller than the sum of its proper divisors (104975201958).

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

89978744502 is a wasteful number, since it uses less digits than its factorization.

89978744502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4998819147 (or 4998819144 counting only the distinct ones).

The product of its (nonzero) digits is 40642560, while the sum is 63.

The spelling of 89978744502 in words is "eighty-nine billion, nine hundred seventy-eight million, seven hundred forty-four thousand, five hundred two".