655408776792 has 128 divisors (see below), whose sum is σ = 2113275225600. Its totient is φ = 164365824000.

The previous prime is 655408776787. The next prime is 655408776833. The reversal of 655408776792 is 297677804556.

It is a super-2 number, since 2×655408776792² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6061209 + ... + 6168392.

It is an arithmetic number, because the mean of its divisors is an integer number (16509962700).

Almost surely, 2^655408776792 is an apocalyptic number.

It is an amenable number.

655408776792 is an abundant number, since it is smaller than the sum of its proper divisors (1457866448808).

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

655408776792 is a wasteful number, since it uses less digits than its factorization.

655408776792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12229657 (or 12229653 counting only the distinct ones).

The product of its (nonzero) digits is 177811200, while the sum is 66.

The spelling of 655408776792 in words is "six hundred fifty-five billion, four hundred eight million, seven hundred seventy-six thousand, seven hundred ninety-two".