77440705033 has 2 divisors, whose sum is σ = 77440705034. Its totient is φ = 77440705032.

The previous prime is 77440705007. The next prime is 77440705061. The reversal of 77440705033 is 33050704477.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73585785289 + 3854919744 = 271267^2 + 62088^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77440705033 is a prime.

It is a super-2 number, since 2×77440705033² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (77440705093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38720352516 + 38720352517.

It is an arithmetic number, because the mean of its divisors is an integer number (38720352517).

Almost surely, 2^77440705033 is an apocalyptic number.

It is an amenable number.

77440705033 is a deficient number, since it is larger than the sum of its proper divisors (1).

77440705033 is an equidigital number, since it uses as much as digits as its factorization.

77440705033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 246960, while the sum is 40.

The spelling of 77440705033 in words is "seventy-seven billion, four hundred forty million, seven hundred five thousand, thirty-three".