99529090681 has 16 divisors (see below), whose sum is σ = 106963623360. Its totient is φ = 92280547840.

The previous prime is 99529090679. The next prime is 99529090729. The reversal of 99529090681 is 18609092599.

It is not a de Polignac number, because 99529090681 - 2¹ = 99529090679 is a prime.

It is a super-2 number, since 2×99529090681² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99529090631) 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, 141990 + ... + 468208.

It is an arithmetic number, because the mean of its divisors is an integer number (6685226460).

Almost surely, 2^99529090681 is an apocalyptic number.

It is an amenable number.

99529090681 is a deficient number, since it is larger than the sum of its proper divisors (7434532679).

99529090681 is a wasteful number, since it uses less digits than its factorization.

99529090681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326504.

The product of its (nonzero) digits is 3149280, while the sum is 58.

The spelling of 99529090681 in words is "ninety-nine billion, five hundred twenty-nine million, ninety thousand, six hundred eighty-one".