80778007525513 has 2 divisors, whose sum is σ = 80778007525514. Its totient is φ = 80778007525512.

The previous prime is 80778007525487. The next prime is 80778007525609. The reversal of 80778007525513 is 31552570087708.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74676697498624 + 6101310026889 = 8641568^2 + 2470083^2 .

It is a cyclic number.

It is not a de Polignac number, because 80778007525513 - 2⁹ = 80778007525001 is a prime.

It is a super-2 number, since 2×80778007525513² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (80778007325513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40389003762756 + 40389003762757.

It is an arithmetic number, because the mean of its divisors is an integer number (40389003762757).

Almost surely, 2^{80778007525513} is an apocalyptic number.

It is an amenable number.

80778007525513 is a deficient number, since it is larger than the sum of its proper divisors (1).

80778007525513 is an equidigital number, since it uses as much as digits as its factorization.

80778007525513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16464000, while the sum is 58.

The spelling of 80778007525513 in words is "eighty trillion, seven hundred seventy-eight billion, seven million, five hundred twenty-five thousand, five hundred thirteen".