99725578102 has 8 divisors (see below), whose sum is σ = 154746586800. Its totient is φ = 48143382504.

The previous prime is 99725578067. The next prime is 99725578111. The reversal of 99725578102 is 20187552799.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 859703202 + ... + 859703317.

It is an arithmetic number, because the mean of its divisors is an integer number (19343323350).

Almost surely, 2^99725578102 is an apocalyptic number.

99725578102 is a deficient number, since it is larger than the sum of its proper divisors (55021008698).

99725578102 is a wasteful number, since it uses less digits than its factorization.

99725578102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1719406550.

The product of its (nonzero) digits is 3175200, while the sum is 55.

The spelling of 99725578102 in words is "ninety-nine billion, seven hundred twenty-five million, five hundred seventy-eight thousand, one hundred two".