654881386992 has 320 divisors, whose sum is σ = 2032544194560. Its totient is φ = 177765580800.

The previous prime is 654881386979. The next prime is 654881387021. The reversal of 654881386992 is 299683188456.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 174122392 + ... + 174126152.

It is an arithmetic number, because the mean of its divisors is an integer number (6351700608).

Almost surely, 2^654881386992 is an apocalyptic number.

654881386992 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 654881386992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1016272097280).

654881386992 is an abundant number, since it is smaller than the sum of its proper divisors (1377662807568).

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

654881386992 is a wasteful number, since it uses less digits than its factorization.

654881386992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4112 (or 4106 counting only the distinct ones).

The product of its digits is 179159040, while the sum is 69.

The spelling of 654881386992 in words is "six hundred fifty-four billion, eight hundred eighty-one million, three hundred eighty-six thousand, nine hundred ninety-two".