99997401240 has 96 divisors (see below), whose sum is σ = 354536254800. Its totient is φ = 24241793280.

The previous prime is 99997401233. The next prime is 99997401253. The reversal of 99997401240 is 4210479999.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12621975 + ... + 12629894.

Almost surely, 2^99997401240 is an apocalyptic number.

99997401240 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

99997401240 is an abundant number, since it is smaller than the sum of its proper divisors (254538853560).

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

99997401240 is a wasteful number, since it uses less digits than its factorization.

99997401240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25251897 (or 25251890 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 54.

The spelling of 99997401240 in words is "ninety-nine billion, nine hundred ninety-seven million, four hundred one thousand, two hundred forty".