99531429474 has 16 divisors (see below), whose sum is σ = 200995509312. Its totient is φ = 32855034768.

The previous prime is 99531429433. The next prime is 99531429493. The reversal of 99531429474 is 47492413599.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80526429 + ... + 80527664.

It is an arithmetic number, because the mean of its divisors is an integer number (12562219332).

Almost surely, 2^99531429474 is an apocalyptic number.

99531429474 is an abundant number, since it is smaller than the sum of its proper divisors (101464079838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99531429474 is a wasteful number, since it uses less digits than its factorization.

99531429474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161054201.

The product of its digits is 9797760, while the sum is 57.

The spelling of 99531429474 in words is "ninety-nine billion, five hundred thirty-one million, four hundred twenty-nine thousand, four hundred seventy-four".