99530551601 has 16 divisors (see below), whose sum is σ = 111909409920. Its totient is φ = 87830814720.

The previous prime is 99530551529. The next prime is 99530551619. The reversal of 99530551601 is 10615503599.

It is a cyclic number.

It is not a de Polignac number, because 99530551601 - 2²² = 99526357297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99530551301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 449585 + ... + 633393.

It is an arithmetic number, because the mean of its divisors is an integer number (6994338120).

Almost surely, 2^99530551601 is an apocalyptic number.

It is an amenable number.

99530551601 is a deficient number, since it is larger than the sum of its proper divisors (12378858319).

99530551601 is a wasteful number, since it uses less digits than its factorization.

99530551601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185656.

The product of its (nonzero) digits is 182250, while the sum is 44.

The spelling of 99530551601 in words is "ninety-nine billion, five hundred thirty million, five hundred fifty-one thousand, six hundred one".