99506872690 has 32 divisors (see below), whose sum is σ = 179817490944. Its totient is φ = 39646242240.

The previous prime is 99506872649. The next prime is 99506872757. The reversal of 99506872690 is 9627860599.

It is a super-2 number, since 2×99506872690² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4613812 + ... + 4635328.

It is an arithmetic number, because the mean of its divisors is an integer number (5619296592).

Almost surely, 2^99506872690 is an apocalyptic number.

99506872690 is a deficient number, since it is larger than the sum of its proper divisors (80310618254).

99506872690 is a wasteful number, since it uses less digits than its factorization.

99506872690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23322.

The product of its (nonzero) digits is 14696640, while the sum is 61.

It can be divided in two parts, 99506 and 872690, that added together give a square (972196 = 986²).

The spelling of 99506872690 in words is "ninety-nine billion, five hundred six million, eight hundred seventy-two thousand, six hundred ninety".