99503773656 has 64 divisors (see below), whose sum is σ = 284479603200. Its totient is φ = 28411339008.

The previous prime is 99503773643. The next prime is 99503773657. The reversal of 99503773656 is 65637730599.

It is a self number, because there is not a number n which added to its sum of digits gives 99503773656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99503773657) 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, 71956 + ... + 451868.

It is an arithmetic number, because the mean of its divisors is an integer number (4444993800).

Almost surely, 2^99503773656 is an apocalyptic number.

It is an amenable number.

99503773656 is an abundant number, since it is smaller than the sum of its proper divisors (184975829544).

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

99503773656 is a wasteful number, since it uses less digits than its factorization.

99503773656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381488 (or 381484 counting only the distinct ones).

The product of its (nonzero) digits is 32148900, while the sum is 60.

The spelling of 99503773656 in words is "ninety-nine billion, five hundred three million, seven hundred seventy-three thousand, six hundred fifty-six".