97427463640 has 64 divisors (see below), whose sum is σ = 246338366400. Its totient is φ = 34409160192.

The previous prime is 97427463631. The next prime is 97427463671. The reversal of 97427463640 is 4636472479.

It is a super-2 number, since 2×97427463640² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (52).

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 15 ways as a sum of consecutive naturals, for example, 4061095 + ... + 4085014.

It is an arithmetic number, because the mean of its divisors is an integer number (3849036975).

Almost surely, 2^97427463640 is an apocalyptic number.

It is an amenable number.

97427463640 is an abundant number, since it is smaller than the sum of its proper divisors (148910902760).

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

97427463640 is a wasteful number, since it uses less digits than its factorization.

97427463640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8146156 (or 8146152 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 52.

The spelling of 97427463640 in words is "ninety-seven billion, four hundred twenty-seven million, four hundred sixty-three thousand, six hundred forty".