97879505863 has 4 divisors (see below), whose sum is σ = 98131124520. Its totient is φ = 97627887208.

The previous prime is 97879505839. The next prime is 97879505923. The reversal of 97879505863 is 36850597879.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36850597879 = 571 ⋅64536949.

It is a cyclic number.

It is not a de Polignac number, because 97879505863 - 2³³ = 89289571271 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 (97879505363) 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, 125808745 + ... + 125809522.

It is an arithmetic number, because the mean of its divisors is an integer number (24532781130).

Almost surely, 2^97879505863 is an apocalyptic number.

97879505863 is a deficient number, since it is larger than the sum of its proper divisors (251618657).

97879505863 is a wasteful number, since it uses less digits than its factorization.

97879505863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251618656.

The product of its (nonzero) digits is 114307200, while the sum is 67.

The spelling of 97879505863 in words is "ninety-seven billion, eight hundred seventy-nine million, five hundred five thousand, eight hundred sixty-three".