855513097922 has 54 divisors (see below), whose sum is σ = 1502965369899. Its totient is φ = 364164460800.

The previous prime is 855513097913. The next prime is 855513097931. The reversal of 855513097922 is 229790315558.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (855513097913) and next prime (855513097931).

It can be written as a sum of positive squares in 5 ways, for example, as 714648746161 + 140864351761 = 845369^2 + 375319^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=654031.

It is an unprimeable number.

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 in 26 ways as a sum of consecutive naturals, for example, 2133448922 + ... + 2133449322.

Almost surely, 2^855513097922 is an apocalyptic number.

855513097922 is a deficient number, since it is larger than the sum of its proper divisors (647452271977).

855513097922 is an frugal number, since it uses more digits than its factorization.

855513097922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1284 (or 643 counting only the distinct ones).

The product of its (nonzero) digits is 6804000, while the sum is 56.

The spelling of 855513097922 in words is "eight hundred fifty-five billion, five hundred thirteen million, ninety-seven thousand, nine hundred twenty-two".