78736088537 has 2 divisors, whose sum is σ = 78736088538. Its totient is φ = 78736088536.

The previous prime is 78736088491. The next prime is 78736088549. The reversal of 78736088537 is 73588063787.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53451590416 + 25284498121 = 231196^2 + 159011^2 .

It is a cyclic number.

It is not a de Polignac number, because 78736088537 - 2¹⁴ = 78736072153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 78736088537.

It is not a weakly prime, because it can be changed into another prime (78736088237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39368044268 + 39368044269.

It is an arithmetic number, because the mean of its divisors is an integer number (39368044269).

Almost surely, 2^78736088537 is an apocalyptic number.

It is an amenable number.

78736088537 is a deficient number, since it is larger than the sum of its proper divisors (1).

78736088537 is an equidigital number, since it uses as much as digits as its factorization.

78736088537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47416320, while the sum is 62.

The spelling of 78736088537 in words is "seventy-eight billion, seven hundred thirty-six million, eighty-eight thousand, five hundred thirty-seven".