79855655897 has 8 divisors (see below), whose sum is σ = 83746377600. Its totient is φ = 75999828960.

The previous prime is 79855655801. The next prime is 79855655963.

79855655897 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 79855655897 - 2¹⁸ = 79855393753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79875655897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8719004 + ... + 8728157.

It is an arithmetic number, because the mean of its divisors is an integer number (10468297200).

Almost surely, 2^79855655897 is an apocalyptic number.

It is an amenable number.

79855655897 is a deficient number, since it is larger than the sum of its proper divisors (3890721703).

79855655897 is a wasteful number, since it uses less digits than its factorization.

79855655897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17447383.

The product of its digits is 952560000, while the sum is 74.

The spelling of 79855655897 in words is "seventy-nine billion, eight hundred fifty-five million, six hundred fifty-five thousand, eight hundred ninety-seven".