97487658657 has 48 divisors (see below), whose sum is σ = 149736600000. Its totient is φ = 60947033472.

The previous prime is 97487658649. The next prime is 97487658661. The reversal of 97487658657 is 75685678479.

97487658657 is a `hidden beast` number, since 9 + 7 + 487 + 65 + 86 + 5 + 7 = 666.

It is not a de Polignac number, because 97487658657 - 2³ = 97487658649 is a prime.

It is a Smith number, since the sum of its digits (72) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (97487658647) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7215094 + ... + 7228592.

It is an arithmetic number, because the mean of its divisors is an integer number (3119512500).

Almost surely, 2^97487658657 is an apocalyptic number.

It is an amenable number.

97487658657 is a deficient number, since it is larger than the sum of its proper divisors (52248941343).

97487658657 is a wasteful number, since it uses less digits than its factorization.

97487658657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13950 (or 13947 counting only the distinct ones).

The product of its digits is 711244800, while the sum is 72.

The spelling of 97487658657 in words is "ninety-seven billion, four hundred eighty-seven million, six hundred fifty-eight thousand, six hundred fifty-seven".