87699455971 has 2 divisors, whose sum is σ = 87699455972. Its totient is φ = 87699455970.

The previous prime is 87699455951. The next prime is 87699456011. The reversal of 87699455971 is 17955499678.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87699455971 - 2¹³ = 87699447779 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87699455971.

It is not a weakly prime, because it can be changed into another prime (87699455911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43849727985 + 43849727986.

It is an arithmetic number, because the mean of its divisors is an integer number (43849727986).

Almost surely, 2^87699455971 is an apocalyptic number.

87699455971 is a deficient number, since it is larger than the sum of its proper divisors (1).

87699455971 is an equidigital number, since it uses as much as digits as its factorization.

87699455971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 171460800, while the sum is 70.

The spelling of 87699455971 in words is "eighty-seven billion, six hundred ninety-nine million, four hundred fifty-five thousand, nine hundred seventy-one".