97387772553 has 16 divisors (see below), whose sum is σ = 144283200960. Its totient is φ = 64922923008.

The previous prime is 97387772413. The next prime is 97387772561. The reversal of 97387772553 is 35527778379.

97387772553 is a `hidden beast` number, since 9 + 7 + 3 + 8 + 7 + 7 + 72 + 553 = 666.

It is not a de Polignac number, because 97387772553 - 2⁸ = 97387772297 is a prime.

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (97387774553) by changing a digit.

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, 1163401 + ... + 1244297.

It is an arithmetic number, because the mean of its divisors is an integer number (9017700060).

Almost surely, 2^97387772553 is an apocalyptic number.

It is an amenable number.

97387772553 is a deficient number, since it is larger than the sum of its proper divisors (46895428407).

97387772553 is a wasteful number, since it uses less digits than its factorization.

97387772553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125493 (or 125487 counting only the distinct ones).

The product of its digits is 77792400, while the sum is 63.

The spelling of 97387772553 in words is "ninety-seven billion, three hundred eighty-seven million, seven hundred seventy-two thousand, five hundred fifty-three".