654244321256 has 32 divisors (see below), whose sum is σ = 1280212525440. Its totient is φ = 312858076608.

The previous prime is 654244321231. The next prime is 654244321271. The reversal of 654244321256 is 652123442456.

It is a happy 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, 1183130 + ... + 1645686.

It is an arithmetic number, because the mean of its divisors is an integer number (40006641420).

Almost surely, 2^654244321256 is an apocalyptic number.

It is an amenable number.

654244321256 is a deficient number, since it is larger than the sum of its proper divisors (625968204184).

654244321256 is a wasteful number, since it uses less digits than its factorization.

654244321256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470273 (or 470269 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 44.

The spelling of 654244321256 in words is "six hundred fifty-four billion, two hundred forty-four million, three hundred twenty-one thousand, two hundred fifty-six".