816577452622 has 16 divisors (see below), whose sum is σ = 1245636639072. Its totient is φ = 401397821440.

The previous prime is 816577452589. The next prime is 816577452653. The reversal of 816577452622 is 226254775618.

It is a happy number.

It is a super-2 number, since 2×816577452622² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8095123 + ... + 8195374.

It is an arithmetic number, because the mean of its divisors is an integer number (77852289942).

Almost surely, 2^816577452622 is an apocalyptic number.

816577452622 is a deficient number, since it is larger than the sum of its proper divisors (429059186450).

816577452622 is a wasteful number, since it uses less digits than its factorization.

816577452622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16290923.

The product of its digits is 11289600, while the sum is 55.

The spelling of 816577452622 in words is "eight hundred sixteen billion, five hundred seventy-seven million, four hundred fifty-two thousand, six hundred twenty-two".