87408531657983 has 2 divisors, whose sum is σ = 87408531657984. Its totient is φ = 87408531657982.

The previous prime is 87408531657961. The next prime is 87408531658033. The reversal of 87408531657983 is 38975613580478.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87408531657983 - 2²² = 87408527463679 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87408531657983.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87408531657943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43704265828991 + 43704265828992.

It is an arithmetic number, because the mean of its divisors is an integer number (43704265828992).

Almost surely, 2^{87408531657983} is an apocalyptic number.

87408531657983 is a deficient number, since it is larger than the sum of its proper divisors (1).

87408531657983 is an equidigital number, since it uses as much as digits as its factorization.

87408531657983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1219276800, while the sum is 74.

The spelling of 87408531657983 in words is "eighty-seven trillion, four hundred eight billion, five hundred thirty-one million, six hundred fifty-seven thousand, nine hundred eighty-three".