853995637087 has 2 divisors, whose sum is σ = 853995637088. Its totient is φ = 853995637086.

The previous prime is 853995637081. The next prime is 853995637091. The reversal of 853995637087 is 780736599358.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-853995637087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (853995637081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 426997818543 + 426997818544.

It is an arithmetic number, because the mean of its divisors is an integer number (426997818544).

Almost surely, 2^853995637087 is an apocalyptic number.

853995637087 is a deficient number, since it is larger than the sum of its proper divisors (1).

853995637087 is an equidigital number, since it uses as much as digits as its factorization.

853995637087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 342921600, while the sum is 70.

The spelling of 853995637087 in words is "eight hundred fifty-three billion, nine hundred ninety-five million, six hundred thirty-seven thousand, eighty-seven".