87451902719 has 2 divisors, whose sum is σ = 87451902720. Its totient is φ = 87451902718.

The previous prime is 87451902649. The next prime is 87451902721. The reversal of 87451902719 is 91720915478.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87451902719 - 2²⁸ = 87183467263 is a prime.

It is a super-2 number, since 2×87451902719² (a number of 23 digits) contains 22 as substring.

Together with 87451902721, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87451902749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43725951359 + 43725951360.

It is an arithmetic number, because the mean of its divisors is an integer number (43725951360).

Almost surely, 2^87451902719 is an apocalyptic number.

87451902719 is a deficient number, since it is larger than the sum of its proper divisors (1).

87451902719 is an equidigital number, since it uses as much as digits as its factorization.

87451902719 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1270080, while the sum is 53.

The spelling of 87451902719 in words is "eighty-seven billion, four hundred fifty-one million, nine hundred two thousand, seven hundred nineteen".