99619727044 has 12 divisors (see below), whose sum is σ = 174339004924. Its totient is φ = 49808582784.

The previous prime is 99619727041. The next prime is 99619727059. The reversal of 99619727044 is 44072791699.

It can be written as a sum of positive squares in 2 ways, for example, as 16941625600 + 82678101444 = 130160^2 + 287538^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 99619727044.

It is not an unprimeable number, because it can be changed into a prime (99619727041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133017 + ... + 465760.

Almost surely, 2^99619727044 is an apocalyptic number.

It is an amenable number.

99619727044 is a deficient number, since it is larger than the sum of its proper divisors (74719277880).

99619727044 is a wasteful number, since it uses less digits than its factorization.

99619727044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640374 (or 640372 counting only the distinct ones).

The product of its (nonzero) digits is 6858432, while the sum is 58.

The spelling of 99619727044 in words is "ninety-nine billion, six hundred nineteen million, seven hundred twenty-seven thousand, forty-four".