99727472556 has 36 divisors (see below), whose sum is σ = 260781612000. Its totient is φ = 32096197728.

The previous prime is 99727472543. The next prime is 99727472557. The reversal of 99727472556 is 65527472799.

99727472556 is a `hidden beast` number, since 9 + 9 + 7 + 2 + 7 + 4 + 72 + 556 = 666.

99727472556 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 99727472493 and 99727472502.

It is not an unprimeable number, because it can be changed into a prime (99727472557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47761156 + ... + 47763243.

Almost surely, 2^99727472556 is an apocalyptic number.

It is an amenable number.

99727472556 is an abundant number, since it is smaller than the sum of its proper divisors (161054139444).

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

99727472556 is a wasteful number, since it uses less digits than its factorization.

99727472556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95524438 (or 95524433 counting only the distinct ones).

The product of its digits is 66679200, while the sum is 63.

The spelling of 99727472556 in words is "ninety-nine billion, seven hundred twenty-seven million, four hundred seventy-two thousand, five hundred fifty-six".