99140975506 has 16 divisors (see below), whose sum is σ = 150401485080. Its totient is φ = 49009121280.

The previous prime is 99140975491. The next prime is 99140975533. The reversal of 99140975506 is 60557904199.

It can be written as a sum of positive squares in 4 ways, for example, as 70256273481 + 28884702025 = 265059^2 + 169955^2 .

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, 392751 + ... + 593746.

Almost surely, 2^99140975506 is an apocalyptic number.

99140975506 is a deficient number, since it is larger than the sum of its proper divisors (51260509574).

99140975506 is a wasteful number, since it uses less digits than its factorization.

99140975506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987069.

The product of its (nonzero) digits is 3061800, while the sum is 55.

The spelling of 99140975506 in words is "ninety-nine billion, one hundred forty million, nine hundred seventy-five thousand, five hundred six".