76987609049431 has 2 divisors, whose sum is σ = 76987609049432. Its totient is φ = 76987609049430.

The previous prime is 76987609049419. The next prime is 76987609049489. The reversal of 76987609049431 is 13494090678967.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 76987609049431 - 2¹⁹ = 76987608525143 is a prime.

It is a super-2 number, since 2×76987609049431² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76987609049401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38493804524715 + 38493804524716.

It is an arithmetic number, because the mean of its divisors is an integer number (38493804524716).

Almost surely, 2^{76987609049431} is an apocalyptic number.

76987609049431 is a deficient number, since it is larger than the sum of its proper divisors (1).

76987609049431 is an equidigital number, since it uses as much as digits as its factorization.

76987609049431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 493807104, while the sum is 73.

The spelling of 76987609049431 in words is "seventy-six trillion, nine hundred eighty-seven billion, six hundred nine million, forty-nine thousand, four hundred thirty-one".