779074947451 has 2 divisors, whose sum is σ = 779074947452. Its totient is φ = 779074947450.

The previous prime is 779074947437. The next prime is 779074947461. The reversal of 779074947451 is 154749470977.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-779074947451 is a prime.

It is a super-2 number, since 2×779074947451² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (779074947421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 389537473725 + 389537473726.

It is an arithmetic number, because the mean of its divisors is an integer number (389537473726).

Almost surely, 2^779074947451 is an apocalyptic number.

779074947451 is a deficient number, since it is larger than the sum of its proper divisors (1).

779074947451 is an equidigital number, since it uses as much as digits as its factorization.

779074947451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62233920, while the sum is 64.

The spelling of 779074947451 in words is "seven hundred seventy-nine billion, seventy-four million, nine hundred forty-seven thousand, four hundred fifty-one".