99886179542 has 4 divisors (see below), whose sum is σ = 149829269316. Its totient is φ = 49943089770.

The previous prime is 99886179539. The next prime is 99886179571. The reversal of 99886179542 is 24597168899.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24971544884 + ... + 24971544887.

It is an arithmetic number, because the mean of its divisors is an integer number (37457317329).

Almost surely, 2^99886179542 is an apocalyptic number.

99886179542 is a deficient number, since it is larger than the sum of its proper divisors (49943089774).

99886179542 is a wasteful number, since it uses less digits than its factorization.

99886179542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49943089773.

The product of its digits is 78382080, while the sum is 68.

The spelling of 99886179542 in words is "ninety-nine billion, eight hundred eighty-six million, one hundred seventy-nine thousand, five hundred forty-two".