99531444577 has 8 divisors (see below), whose sum is σ = 104773240800. Its totient is φ = 94289978304.

The previous prime is 99531444503. The next prime is 99531444581. The reversal of 99531444577 is 77544413599.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99531444577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99531444377) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 754638 + ... + 876664.

It is an arithmetic number, because the mean of its divisors is an integer number (13096655100).

Almost surely, 2^99531444577 is an apocalyptic number.

It is an amenable number.

99531444577 is a deficient number, since it is larger than the sum of its proper divisors (5241796223).

99531444577 is a wasteful number, since it uses less digits than its factorization.

99531444577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164975.

The product of its digits is 19051200, while the sum is 58.

The spelling of 99531444577 in words is "ninety-nine billion, five hundred thirty-one million, four hundred forty-four thousand, five hundred seventy-seven".