99620120554 has 8 divisors (see below), whose sum is σ = 150100272000. Its totient is φ = 49586696556.

The previous prime is 99620120543. The next prime is 99620120627. The reversal of 99620120554 is 45502102699.

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

It is a self number, because there is not a number n which added to its sum of digits gives 99620120554.

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, 111681304 + ... + 111682195.

It is an arithmetic number, because the mean of its divisors is an integer number (18762534000).

Almost surely, 2^99620120554 is an apocalyptic number.

99620120554 is a deficient number, since it is larger than the sum of its proper divisors (50480151446).

99620120554 is a wasteful number, since it uses less digits than its factorization.

99620120554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223363724.

The product of its (nonzero) digits is 194400, while the sum is 43.

The spelling of 99620120554 in words is "ninety-nine billion, six hundred twenty million, one hundred twenty thousand, five hundred fifty-four".