8155582456656 has 80 divisors (see below), whose sum is σ = 21796794826560. Its totient is φ = 2624579973120.

The previous prime is 8155582456607. The next prime is 8155582456657. The reversal of 8155582456656 is 6566542855518.

It is a super-3 number, since 3×8155582456656³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8155582456657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18111616 + ... + 18556448.

It is an arithmetic number, because the mean of its divisors is an integer number (272459935332).

Almost surely, 2^{8155582456656} is an apocalyptic number.

It is an amenable number.

8155582456656 is an abundant number, since it is smaller than the sum of its proper divisors (13641212369904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8155582456656 is a wasteful number, since it uses less digits than its factorization.

8155582456656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458044 (or 458038 counting only the distinct ones).

The product of its digits is 345600000, while the sum is 66.

The spelling of 8155582456656 in words is "eight trillion, one hundred fifty-five billion, five hundred eighty-two million, four hundred fifty-six thousand, six hundred fifty-six".