99976415587 has 2 divisors, whose sum is σ = 99976415588. Its totient is φ = 99976415586.

The previous prime is 99976415563. The next prime is 99976415597. The reversal of 99976415587 is 78551467999.

It is a strong prime.

It is an emirp because it is prime and its reverse (78551467999) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99976415587 is a prime.

It is not a weakly prime, because it can be changed into another prime (99976415597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49988207793 + 49988207794.

It is an arithmetic number, because the mean of its divisors is an integer number (49988207794).

Almost surely, 2^99976415587 is an apocalyptic number.

99976415587 is a deficient number, since it is larger than the sum of its proper divisors (1).

99976415587 is an equidigital number, since it uses as much as digits as its factorization.

99976415587 is an evil number, because the sum of its binary digits is even.

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

The spelling of 99976415587 in words is "ninety-nine billion, nine hundred seventy-six million, four hundred fifteen thousand, five hundred eighty-seven".