640152121160 has 192 divisors, whose sum is σ = 1559190124800. Its totient is φ = 236071148544.

The previous prime is 640152121151. The next prime is 640152121181. The reversal of 640152121160 is 61121251046.

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, 137280989 + ... + 137285651.

It is an arithmetic number, because the mean of its divisors is an integer number (8120781900).

Almost surely, 2^640152121160 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 640152121160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (779595062400).

640152121160 is an abundant number, since it is smaller than the sum of its proper divisors (919038003640).

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

640152121160 is a wasteful number, since it uses less digits than its factorization.

640152121160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4880 (or 4839 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

The spelling of 640152121160 in words is "six hundred forty billion, one hundred fifty-two million, one hundred twenty-one thousand, one hundred sixty".