640360454130 has 96 divisors (see below), whose sum is σ = 1727889096960. Its totient is φ = 164344064640.

The previous prime is 640360453981. The next prime is 640360454147. The reversal of 640360454130 is 31454063046.

640360454130 is a `hidden beast` number, since 6 + 4 + 0 + 3 + 604 + 5 + 41 + 3 + 0 = 666.

640360454130 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×640360454130² (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, 417259 + ... + 1206161.

It is an arithmetic number, because the mean of its divisors is an integer number (17998844760).

Almost surely, 2^640360454130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 640360454130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (863944548480).

640360454130 is an abundant number, since it is smaller than the sum of its proper divisors (1087528642830).

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

640360454130 is a wasteful number, since it uses less digits than its factorization.

640360454130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 789256 (or 789253 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The spelling of 640360454130 in words is "six hundred forty billion, three hundred sixty million, four hundred fifty-four thousand, one hundred thirty".