640052267602 has 64 divisors (see below), whose sum is σ = 1103888793600. Its totient is φ = 277981189200.

The previous prime is 640052267599. The next prime is 640052267609. The reversal of 640052267602 is 206762250046.

It is not an unprimeable number, because it can be changed into a prime (640052267609) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6470149 + ... + 6568327.

It is an arithmetic number, because the mean of its divisors is an integer number (17248262400).

Almost surely, 2^640052267602 is an apocalyptic number.

640052267602 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

640052267602 is a deficient number, since it is larger than the sum of its proper divisors (463836525998).

640052267602 is a wasteful number, since it uses less digits than its factorization.

640052267602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98324 (or 98302 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 40.

The spelling of 640052267602 in words is "six hundred forty billion, fifty-two million, two hundred sixty-seven thousand, six hundred two".