79870262893 has 4 divisors (see below), whose sum is σ = 84073960960. Its totient is φ = 75666564828.

The previous prime is 79870262867. The next prime is 79870262909. The reversal of 79870262893 is 39826207897.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79870262893 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 (79870266893) 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, 2101849005 + ... + 2101849042.

It is an arithmetic number, because the mean of its divisors is an integer number (21018490240).

Almost surely, 2^79870262893 is an apocalyptic number.

It is an amenable number.

79870262893 is a deficient number, since it is larger than the sum of its proper divisors (4203698067).

79870262893 is a wasteful number, since it uses less digits than its factorization.

79870262893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4203698066.

The product of its (nonzero) digits is 18289152, while the sum is 61.

The spelling of 79870262893 in words is "seventy-nine billion, eight hundred seventy million, two hundred sixty-two thousand, eight hundred ninety-three".