77002132517 has 2 divisors, whose sum is σ = 77002132518. Its totient is φ = 77002132516.

The previous prime is 77002132511. The next prime is 77002132531. The reversal of 77002132517 is 71523120077.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46897800481 + 30104332036 = 216559^2 + 173506^2 .

It is a cyclic number.

It is not a de Polignac number, because 77002132517 - 2¹⁴ = 77002116133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77002132511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38501066258 + 38501066259.

It is an arithmetic number, because the mean of its divisors is an integer number (38501066259).

Almost surely, 2^77002132517 is an apocalyptic number.

It is an amenable number.

77002132517 is a deficient number, since it is larger than the sum of its proper divisors (1).

77002132517 is an equidigital number, since it uses as much as digits as its factorization.

77002132517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20580, while the sum is 35.

The spelling of 77002132517 in words is "seventy-seven billion, two million, one hundred thirty-two thousand, five hundred seventeen".