97905259651 has 4 divisors (see below), whose sum is σ = 98771677992. Its totient is φ = 97038841312.

The previous prime is 97905259643. The next prime is 97905259687. The reversal of 97905259651 is 15695250979.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 97905259651 - 2³ = 97905259643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97905259631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 433209001 + ... + 433209226.

It is an arithmetic number, because the mean of its divisors is an integer number (24692919498).

Almost surely, 2^97905259651 is an apocalyptic number.

97905259651 is a deficient number, since it is larger than the sum of its proper divisors (866418341).

97905259651 is a wasteful number, since it uses less digits than its factorization.

97905259651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866418340.

The product of its (nonzero) digits is 7654500, while the sum is 58.

The spelling of 97905259651 in words is "ninety-seven billion, nine hundred five million, two hundred fifty-nine thousand, six hundred fifty-one".