99127461780 has 72 divisors (see below), whose sum is σ = 300732705000. Its totient is φ = 26429939712.

The previous prime is 99127461761. The next prime is 99127461809. The reversal of 99127461780 is 8716472199.

99127461780 is a `hidden beast` number, since 9 + 9 + 12 + 7 + 4 + 617 + 8 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 19607184 + 99107854596 = 4428^2 + 314814^2 .

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 1244596 + ... + 1321844.

It is an arithmetic number, because the mean of its divisors is an integer number (4176843125).

Almost surely, 2^99127461780 is an apocalyptic number.

99127461780 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

99127461780 is an abundant number, since it is smaller than the sum of its proper divisors (201605243220).

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

99127461780 is a wasteful number, since it uses less digits than its factorization.

99127461780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84393 (or 84388 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 54.

The spelling of 99127461780 in words is "ninety-nine billion, one hundred twenty-seven million, four hundred sixty-one thousand, seven hundred eighty".