79357245643 has 4 divisors (see below), whose sum is σ = 85461649168. Its totient is φ = 73252842120.

The previous prime is 79357245637. The next prime is 79357245647. The reversal of 79357245643 is 34654275397.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79357245643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79357245647) 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, 3052201743 + ... + 3052201768.

It is an arithmetic number, because the mean of its divisors is an integer number (21365412292).

Almost surely, 2^79357245643 is an apocalyptic number.

79357245643 is a deficient number, since it is larger than the sum of its proper divisors (6104403525).

79357245643 is a wasteful number, since it uses less digits than its factorization.

79357245643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6104403524.

The product of its digits is 19051200, while the sum is 55.

The spelling of 79357245643 in words is "seventy-nine billion, three hundred fifty-seven million, two hundred forty-five thousand, six hundred forty-three".