77372070469 has 2 divisors, whose sum is σ = 77372070470. Its totient is φ = 77372070468.

The previous prime is 77372070439. The next prime is 77372070487. The reversal of 77372070469 is 96407027377.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46339020225 + 31033050244 = 215265^2 + 176162^2 .

It is a cyclic number.

It is not a de Polignac number, because 77372070469 - 2¹⁷ = 77371939397 is a prime.

It is a super-2 number, since 2×77372070469² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77372070439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38686035234 + 38686035235.

It is an arithmetic number, because the mean of its divisors is an integer number (38686035235).

Almost surely, 2^77372070469 is an apocalyptic number.

It is an amenable number.

77372070469 is a deficient number, since it is larger than the sum of its proper divisors (1).

77372070469 is an equidigital number, since it uses as much as digits as its factorization.

77372070469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3111696, while the sum is 52.

The spelling of 77372070469 in words is "seventy-seven billion, three hundred seventy-two million, seventy thousand, four hundred sixty-nine".