279179420677 has 2 divisors, whose sum is σ = 279179420678. Its totient is φ = 279179420676.

The previous prime is 279179420651. The next prime is 279179420711. The reversal of 279179420677 is 776024971972.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 278497897441 + 681523236 = 527729^2 + 26106^2 .

It is a cyclic number.

It is not a de Polignac number, because 279179420677 - 2¹¹ = 279179418629 is a prime.

It is a super-2 number, since 2×279179420677² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (279179426677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139589710338 + 139589710339.

It is an arithmetic number, because the mean of its divisors is an integer number (139589710339).

Almost surely, 2^279179420677 is an apocalyptic number.

It is an amenable number.

279179420677 is a deficient number, since it is larger than the sum of its proper divisors (1).

279179420677 is an equidigital number, since it uses as much as digits as its factorization.

279179420677 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18670176, while the sum is 61.

The spelling of 279179420677 in words is "two hundred seventy-nine billion, one hundred seventy-nine million, four hundred twenty thousand, six hundred seventy-seven".