97155313511 has 4 divisors (see below), whose sum is σ = 98802013800. Its totient is φ = 95508613224.

The previous prime is 97155313499. The next prime is 97155313547. The reversal of 97155313511 is 11531355179.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11531355179 = 30931 ⋅372809.

It is a cyclic number.

It is not a de Polignac number, because 97155313511 - 2³⁴ = 79975444327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97155313561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 823350056 + ... + 823350173.

It is an arithmetic number, because the mean of its divisors is an integer number (24700503450).

Almost surely, 2^97155313511 is an apocalyptic number.

97155313511 is a deficient number, since it is larger than the sum of its proper divisors (1646700289).

97155313511 is a wasteful number, since it uses less digits than its factorization.

97155313511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1646700288.

The product of its digits is 70875, while the sum is 41.

The spelling of 97155313511 in words is "ninety-seven billion, one hundred fifty-five million, three hundred thirteen thousand, five hundred eleven".