99415077840 has 200 divisors, whose sum is σ = 371843861928. Its totient is φ = 24471383040.

The previous prime is 99415077803. The next prime is 99415077901. The reversal of 99415077840 is 4877051499.

99415077840 is a `hidden beast` number, since 9 + 94 + 1 + 507 + 7 + 8 + 40 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 20343887424 + 79071190416 = 142632^2 + 281196^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 505831 + ... + 674310.

Almost surely, 2^99415077840 is an apocalyptic number.

99415077840 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

99415077840 is an abundant number, since it is smaller than the sum of its proper divisors (272428784088).

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

99415077840 is a wasteful number, since it uses less digits than its factorization.

99415077840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1180179 (or 1180164 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 54.

The spelling of 99415077840 in words is "ninety-nine billion, four hundred fifteen million, seventy-seven thousand, eight hundred forty".