99945561502 has 32 divisors (see below), whose sum is σ = 155647777824. Its totient is φ = 48100262400.

The previous prime is 99945561497. The next prime is 99945561559. The reversal of 99945561502 is 20516554999.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1803852 + ... + 1858432.

It is an arithmetic number, because the mean of its divisors is an integer number (4863993057).

Almost surely, 2^99945561502 is an apocalyptic number.

99945561502 is a deficient number, since it is larger than the sum of its proper divisors (55702216322).

99945561502 is a wasteful number, since it uses less digits than its factorization.

99945561502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54924.

The product of its (nonzero) digits is 4374000, while the sum is 55.

The spelling of 99945561502 in words is "ninety-nine billion, nine hundred forty-five million, five hundred sixty-one thousand, five hundred two".