79293643643 has 8 divisors (see below), whose sum is σ = 83976918480. Its totient is φ = 74612473600.

The previous prime is 79293643621. The next prime is 79293643651. The reversal of 79293643643 is 34634639297.

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 79293643643 - 2¹⁰ = 79293642619 is a prime.

It is a super-2 number, since 2×79293643643² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79293645643) 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, 448298 + ... + 599631.

It is an arithmetic number, because the mean of its divisors is an integer number (10497114810).

Almost surely, 2^79293643643 is an apocalyptic number.

79293643643 is a deficient number, since it is larger than the sum of its proper divisors (4683274837).

79293643643 is a wasteful number, since it uses less digits than its factorization.

79293643643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052397.

The product of its digits is 17635968, while the sum is 56.

The spelling of 79293643643 in words is "seventy-nine billion, two hundred ninety-three million, six hundred forty-three thousand, six hundred forty-three".