79307940377 has 2 divisors, whose sum is σ = 79307940378. Its totient is φ = 79307940376.

The previous prime is 79307940329. The next prime is 79307940409. The reversal of 79307940377 is 77304970397.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68809683856 + 10498256521 = 262316^2 + 102461^2 .

It is a cyclic number.

It is not a de Polignac number, because 79307940377 - 2¹⁴ = 79307923993 is a prime.

It is not a weakly prime, because it can be changed into another prime (79307940977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39653970188 + 39653970189.

It is an arithmetic number, because the mean of its divisors is an integer number (39653970189).

Almost surely, 2^79307940377 is an apocalyptic number.

It is an amenable number.

79307940377 is a deficient number, since it is larger than the sum of its proper divisors (1).

79307940377 is an equidigital number, since it uses as much as digits as its factorization.

79307940377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7001316, while the sum is 56.

The spelling of 79307940377 in words is "seventy-nine billion, three hundred seven million, nine hundred forty thousand, three hundred seventy-seven".