99727472555 has 64 divisors (see below), whose sum is σ = 136495756800. Its totient is φ = 69491312640.

The previous prime is 99727472543. The next prime is 99727472557. The reversal of 99727472555 is 55527472799.

It is not a de Polignac number, because 99727472555 - 2¹² = 99727468459 is a prime.

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 63 ways as a sum of consecutive naturals, for example, 15528245 + ... + 15534665.

It is an arithmetic number, because the mean of its divisors is an integer number (2132746200).

Almost surely, 2^99727472555 is an apocalyptic number.

99727472555 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

99727472555 is a deficient number, since it is larger than the sum of its proper divisors (36768284245).

99727472555 is a wasteful number, since it uses less digits than its factorization.

99727472555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6684.

The product of its digits is 55566000, while the sum is 62.

The spelling of 99727472555 in words is "ninety-nine billion, seven hundred twenty-seven million, four hundred seventy-two thousand, five hundred fifty-five".