654378862020 has 96 divisors (see below), whose sum is σ = 1974454175232. Its totient is φ = 160975815168.

The previous prime is 654378862001. The next prime is 654378862037. The reversal of 654378862020 is 20268873456.

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, 969754 + ... + 1499726.

It is an arithmetic number, because the mean of its divisors is an integer number (20567230992).

Almost surely, 2^654378862020 is an apocalyptic number.

654378862020 is a gapful number since it is divisible by the number (60) 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 654378862020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (987227087616).

654378862020 is an abundant number, since it is smaller than the sum of its proper divisors (1320075313212).

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

654378862020 is a wasteful number, since it uses less digits than its factorization.

654378862020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531581 (or 531579 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 51.

The spelling of 654378862020 in words is "six hundred fifty-four billion, three hundred seventy-eight million, eight hundred sixty-two thousand, twenty".