640201537075 has 24 divisors (see below), whose sum is σ = 804599930880. Its totient is φ = 505237044000.

The previous prime is 640201537043. The next prime is 640201537081. The reversal of 640201537075 is 570735102046.

It is not a de Polignac number, because 640201537075 - 2⁵ = 640201537043 is a prime.

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, 2132412 + ... + 2414038.

It is an arithmetic number, because the mean of its divisors is an integer number (33524997120).

Almost surely, 2^640201537075 is an apocalyptic number.

640201537075 is a deficient number, since it is larger than the sum of its proper divisors (164398393805).

640201537075 is a wasteful number, since it uses less digits than its factorization.

640201537075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282867 (or 282862 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 40.

The spelling of 640201537075 in words is "six hundred forty billion, two hundred one million, five hundred thirty-seven thousand, seventy-five".