87285904423 has 2 divisors, whose sum is σ = 87285904424. Its totient is φ = 87285904422.

The previous prime is 87285904369. The next prime is 87285904451. The reversal of 87285904423 is 32440958278.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87285904423 - 2²⁵ = 87252349991 is a prime.

It is a super-2 number, since 2×87285904423² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87285904483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43642952211 + 43642952212.

It is an arithmetic number, because the mean of its divisors is an integer number (43642952212).

Almost surely, 2^87285904423 is an apocalyptic number.

87285904423 is a deficient number, since it is larger than the sum of its proper divisors (1).

87285904423 is an equidigital number, since it uses as much as digits as its factorization.

87285904423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3870720, while the sum is 52.

The spelling of 87285904423 in words is "eighty-seven billion, two hundred eighty-five million, nine hundred four thousand, four hundred twenty-three".