660870514320 has 80 divisors (see below), whose sum is σ = 2051188513152. Its totient is φ = 176017950720.

The previous prime is 660870514229. The next prime is 660870514321. The reversal of 660870514320 is 23415078066.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (660870514321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1475401 + ... + 1870440.

Almost surely, 2^660870514320 is an apocalyptic number.

660870514320 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

660870514320 is an abundant number, since it is smaller than the sum of its proper divisors (1390317998832).

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

660870514320 is a wasteful number, since it uses less digits than its factorization.

660870514320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3346680 (or 3346674 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 660870514320 in words is "six hundred sixty billion, eight hundred seventy million, five hundred fourteen thousand, three hundred twenty".