99938139554 has 8 divisors (see below), whose sum is σ = 163535137488. Its totient is φ = 45426427060.

The previous prime is 99938139461. The next prime is 99938139611. The reversal of 99938139554 is 45593183999.

99938139554 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

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, 2271321332 + ... + 2271321375.

It is an arithmetic number, because the mean of its divisors is an integer number (20441892186).

Almost surely, 2^99938139554 is an apocalyptic number.

99938139554 is a deficient number, since it is larger than the sum of its proper divisors (63596997934).

99938139554 is a wasteful number, since it uses less digits than its factorization.

99938139554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4542642720.

The product of its digits is 47239200, while the sum is 65.

The spelling of 99938139554 in words is "ninety-nine billion, nine hundred thirty-eight million, one hundred thirty-nine thousand, five hundred fifty-four".