99166535380 has 48 divisors (see below), whose sum is σ = 228258313920. Its totient is φ = 35889638400.

The previous prime is 99166535357. The next prime is 99166535393. The reversal of 99166535380 is 8353566199.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (55).

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, 1021725 + ... + 1114564.

It is an arithmetic number, because the mean of its divisors is an integer number (4755381540).

Almost surely, 2^99166535380 is an apocalyptic number.

It is an amenable number.

99166535380 is an abundant number, since it is smaller than the sum of its proper divisors (129091778540).

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

99166535380 is a wasteful number, since it uses less digits than its factorization.

99166535380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2136520 (or 2136518 counting only the distinct ones).

The product of its (nonzero) digits is 5248800, while the sum is 55.

The spelling of 99166535380 in words is "ninety-nine billion, one hundred sixty-six million, five hundred thirty-five thousand, three hundred eighty".