640165401162 has 48 divisors (see below), whose sum is σ = 1585329363072. Its totient is φ = 182886181920.

The previous prime is 640165401101. The next prime is 640165401179. The reversal of 640165401162 is 261104561046.

640165401162 is a `hidden beast` number, since 6 + 40 + 1 + 6 + 540 + 11 + 62 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1043212 + ... + 1539032.

It is an arithmetic number, because the mean of its divisors is an integer number (33027695064).

Almost surely, 2^640165401162 is an apocalyptic number.

640165401162 is an abundant number, since it is smaller than the sum of its proper divisors (945163961910).

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

640165401162 is a wasteful number, since it uses less digits than its factorization.

640165401162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506083 (or 506080 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 640165401162 in words is "six hundred forty billion, one hundred sixty-five million, four hundred one thousand, one hundred sixty-two".