77802247474379 has 2 divisors, whose sum is σ = 77802247474380. Its totient is φ = 77802247474378.

The previous prime is 77802247474309. The next prime is 77802247474411. The reversal of 77802247474379 is 97347474220877.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 77802247474379 - 2²⁸ = 77801979038923 is a prime.

It is a super-2 number, since 2×77802247474379² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (77802247474309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38901123737189 + 38901123737190.

It is an arithmetic number, because the mean of its divisors is an integer number (38901123737190).

Almost surely, 2^{77802247474379} is an apocalyptic number.

77802247474379 is a deficient number, since it is larger than the sum of its proper divisors (1).

77802247474379 is an equidigital number, since it uses as much as digits as its factorization.

77802247474379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 929359872, while the sum is 71.

The spelling of 77802247474379 in words is "seventy-seven trillion, eight hundred two billion, two hundred forty-seven million, four hundred seventy-four thousand, three hundred seventy-nine".