97981352051 has 6 divisors (see below), whose sum is σ = 106889880252. Its totient is φ = 89073012620.

The previous prime is 97981352047. The next prime is 97981352173. The reversal of 97981352051 is 15025318979.

It is not a de Polignac number, because 97981352051 - 2² = 97981352047 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97981352851) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 990980 + ... + 1085358.

It is an arithmetic number, because the mean of its divisors is an integer number (17814980042).

Almost surely, 2^97981352051 is an apocalyptic number.

97981352051 is a deficient number, since it is larger than the sum of its proper divisors (8908528201).

97981352051 is an frugal number, since it uses more digits than its factorization.

97981352051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188769 (or 94390 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 50.

The spelling of 97981352051 in words is "ninety-seven billion, nine hundred eighty-one million, three hundred fifty-two thousand, fifty-one".