87285904451 has 2 divisors, whose sum is σ = 87285904452. Its totient is φ = 87285904450.

The previous prime is 87285904423. The next prime is 87285904469. The reversal of 87285904451 is 15440958278.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87285904451 is a prime.

It is a super-2 number, since 2×87285904451² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 87285904393 and 87285904402.

It is not a weakly prime, because it can be changed into another prime (87285904471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43642952225 + 43642952226.

It is an arithmetic number, because the mean of its divisors is an integer number (43642952226).

Almost surely, 2^87285904451 is an apocalyptic number.

87285904451 is a deficient number, since it is larger than the sum of its proper divisors (1).

87285904451 is an equidigital number, since it uses as much as digits as its factorization.

87285904451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3225600, while the sum is 53.

The spelling of 87285904451 in words is "eighty-seven billion, two hundred eighty-five million, nine hundred four thousand, four hundred fifty-one".