655679160240 has 240 divisors, whose sum is σ = 2243669041824. Its totient is φ = 157460152320.

The previous prime is 655679160229. The next prime is 655679160343. The reversal of 655679160240 is 42061976556.

It is a tau number, because it is divible by the number of its divisors (240).

It is a super-2 number, since 2×655679160240² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5182212 + ... + 5307228.

Almost surely, 2^655679160240 is an apocalyptic number.

655679160240 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 655679160240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1121834520912).

655679160240 is an abundant number, since it is smaller than the sum of its proper divisors (1587989881584).

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

655679160240 is a wasteful number, since it uses less digits than its factorization.

655679160240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125128 (or 125081 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 51.

The spelling of 655679160240 in words is "six hundred fifty-five billion, six hundred seventy-nine million, one hundred sixty thousand, two hundred forty".