60640640460 has 72 divisors (see below), whose sum is σ = 186958773456. Its totient is φ = 15905738880.

The previous prime is 60640640413. The next prime is 60640640477. The reversal of 60640640460 is 6404604606.

It is a happy number.

60640640460 is a `hidden beast` number, since 6 + 0 + 6 + 4 + 0 + 640 + 4 + 6 + 0 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2750434 + ... + 2772393.

Almost surely, 2^60640640460 is an apocalyptic number.

60640640460 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

60640640460 is an abundant number, since it is smaller than the sum of its proper divisors (126318132996).

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

60640640460 is a wasteful number, since it uses less digits than its factorization.

60640640460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5522903 (or 5522898 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The spelling of 60640640460 in words is "sixty billion, six hundred forty million, six hundred forty thousand, four hundred sixty".