77738506084039 has 2 divisors, whose sum is σ = 77738506084040. Its totient is φ = 77738506084038.

The previous prime is 77738506084027. The next prime is 77738506084069. The reversal of 77738506084039 is 93048060583777.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 77738506084039 - 2²³ = 77738497695431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77738506084069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38869253042019 + 38869253042020.

It is an arithmetic number, because the mean of its divisors is an integer number (38869253042020).

Almost surely, 2^{77738506084039} is an apocalyptic number.

77738506084039 is a deficient number, since it is larger than the sum of its proper divisors (1).

77738506084039 is an equidigital number, since it uses as much as digits as its factorization.

77738506084039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 213373440, while the sum is 67.

The spelling of 77738506084039 in words is "seventy-seven trillion, seven hundred thirty-eight billion, five hundred six million, eighty-four thousand, thirty-nine".