97711717138 has 32 divisors (see below), whose sum is σ = 168261110784. Its totient is φ = 41687826432.

The previous prime is 97711717123. The next prime is 97711717157. The reversal of 97711717138 is 83171711779.

It is a super-2 number, since 2×97711717138² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6551706 + ... + 6566602.

It is an arithmetic number, because the mean of its divisors is an integer number (5258159712).

Almost surely, 2^97711717138 is an apocalyptic number.

97711717138 is a deficient number, since it is larger than the sum of its proper divisors (70549393646).

97711717138 is a wasteful number, since it uses less digits than its factorization.

97711717138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16986.

The product of its digits is 518616, while the sum is 52.

The spelling of 97711717138 in words is "ninety-seven billion, seven hundred eleven million, seven hundred seventeen thousand, one hundred thirty-eight".