97507915951 has 4 divisors (see below), whose sum is σ = 97511774400. Its totient is φ = 97504057504.

The previous prime is 97507915909. The next prime is 97507915987. The reversal of 97507915951 is 15951970579.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15951970579 = 29 ⋅550067951.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97507915951 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 (97507915151) 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, 1891066 + ... + 1941943.

It is an arithmetic number, because the mean of its divisors is an integer number (24377943600).

Almost surely, 2^97507915951 is an apocalyptic number.

97507915951 is a deficient number, since it is larger than the sum of its proper divisors (3858449).

97507915951 is a wasteful number, since it uses less digits than its factorization.

97507915951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3858448.

The product of its (nonzero) digits is 4465125, while the sum is 58.

The spelling of 97507915951 in words is "ninety-seven billion, five hundred seven million, nine hundred fifteen thousand, nine hundred fifty-one".