640148610060 has 72 divisors (see below), whose sum is σ = 2013702062736. Its totient is φ = 170706294720.

The previous prime is 640148609987. The next prime is 640148610061. The reversal of 640148610060 is 60016841046.

640148610060 is a `hidden beast` number, since 640 + 1 + 4 + 8 + 6 + 1 + 0 + 0 + 6 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 640148609997 and 640148610024.

It is not an unprimeable number, because it can be changed into a prime (640148610061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65854051 + ... + 65863770.

Almost surely, 2^640148610060 is an apocalyptic number.

640148610060 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

640148610060 is an abundant number, since it is smaller than the sum of its proper divisors (1373553452676).

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

640148610060 is a wasteful number, since it uses less digits than its factorization.

640148610060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131717845 (or 131717831 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The spelling of 640148610060 in words is "six hundred forty billion, one hundred forty-eight million, six hundred ten thousand, sixty".