654679541880 has 320 divisors, whose sum is σ = 2708248213440. Its totient is φ = 138130126848.

The previous prime is 654679541863. The next prime is 654679541909. The reversal of 654679541880 is 88145976456.

654679541880 is a `hidden beast` number, since 6 + 5 + 4 + 6 + 7 + 9 + 541 + 8 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 815389 + ... + 1405068.

It is an arithmetic number, because the mean of its divisors is an integer number (8463275667).

Almost surely, 2^654679541880 is an apocalyptic number.

654679541880 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

654679541880 is an abundant number, since it is smaller than the sum of its proper divisors (2053568671560).

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

654679541880 is a wasteful number, since it uses less digits than its factorization.

654679541880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2220500 (or 2220487 counting only the distinct ones).

The product of its (nonzero) digits is 58060800, while the sum is 63.

The spelling of 654679541880 in words is "six hundred fifty-four billion, six hundred seventy-nine million, five hundred forty-one thousand, eight hundred eighty".