76493639149 has 2 divisors, whose sum is σ = 76493639150. Its totient is φ = 76493639148.

The previous prime is 76493639111. The next prime is 76493639191. The reversal of 76493639149 is 94193639467.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64795702500 + 11697936649 = 254550^2 + 108157^2 .

It is a cyclic number.

It is not a de Polignac number, because 76493639149 - 2⁷ = 76493639021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76493639449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38246819574 + 38246819575.

It is an arithmetic number, because the mean of its divisors is an integer number (38246819575).

Almost surely, 2^76493639149 is an apocalyptic number.

It is an amenable number.

76493639149 is a deficient number, since it is larger than the sum of its proper divisors (1).

76493639149 is an equidigital number, since it uses as much as digits as its factorization.

76493639149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26453952, while the sum is 61.

The spelling of 76493639149 in words is "seventy-six billion, four hundred ninety-three million, six hundred thirty-nine thousand, one hundred forty-nine".