654971439312 has 50 divisors (see below), whose sum is σ = 1895677371698. Its totient is φ = 218323812672.

The previous prime is 654971439271. The next prime is 654971439313. The reversal of 654971439312 is 213934179456.

654971439312 is a `hidden beast` number, since 6 + 5 + 497 + 143 + 9 + 3 + 1 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 633036644496 + 21934794816 = 795636^2 + 148104^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654971439313) by changing a digit.

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 9 ways as a sum of consecutive naturals, for example, 252688303 + ... + 252690894.

Almost surely, 2^654971439312 is an apocalyptic number.

It is an amenable number.

654971439312 is an abundant number, since it is smaller than the sum of its proper divisors (1240705932386).

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

654971439312 is a wasteful number, since it uses less digits than its factorization.

654971439312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505379217 (or 505379202 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 54.

The spelling of 654971439312 in words is "six hundred fifty-four billion, nine hundred seventy-one million, four hundred thirty-nine thousand, three hundred twelve".