79307940077 has 4 divisors (see below), whose sum is σ = 79311167520. Its totient is φ = 79304712636.

The previous prime is 79307940059. The next prime is 79307940091. The reversal of 79307940077 is 77004970397.

It is a happy number.

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 not a de Polignac number, because 79307940077 - 2¹² = 79307935981 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 (79307940377) 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, 1576577 + ... + 1626102.

It is an arithmetic number, because the mean of its divisors is an integer number (19827791880).

Almost surely, 2^79307940077 is an apocalyptic number.

It is an amenable number.

79307940077 is a deficient number, since it is larger than the sum of its proper divisors (3227443).

79307940077 is a wasteful number, since it uses less digits than its factorization.

79307940077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3227442.

The product of its (nonzero) digits is 2333772, while the sum is 53.

The spelling of 79307940077 in words is "seventy-nine billion, three hundred seven million, nine hundred forty thousand, seventy-seven".