76987609049513 has 2 divisors, whose sum is σ = 76987609049514. Its totient is φ = 76987609049512.

The previous prime is 76987609049489. The next prime is 76987609049591. The reversal of 76987609049513 is 31594090678967.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76760868323584 + 226740725929 = 8761328^2 + 476173^2 .

It is a cyclic number.

It is not a de Polignac number, because 76987609049513 - 2¹⁰ = 76987609048489 is a prime.

It is not a weakly prime, because it can be changed into another prime (76987609049713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38493804524756 + 38493804524757.

It is an arithmetic number, because the mean of its divisors is an integer number (38493804524757).

Almost surely, 2^{76987609049513} is an apocalyptic number.

It is an amenable number.

76987609049513 is a deficient number, since it is larger than the sum of its proper divisors (1).

76987609049513 is an equidigital number, since it uses as much as digits as its factorization.

76987609049513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 617258880, while the sum is 74.

The spelling of 76987609049513 in words is "seventy-six trillion, nine hundred eighty-seven billion, six hundred nine million, forty-nine thousand, five hundred thirteen".