640461160653 has 8 divisors (see below), whose sum is σ = 855464998368. Its totient is φ = 426215715024.

The previous prime is 640461160649. The next prime is 640461160681. The reversal of 640461160653 is 356061164046.

640461160653 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 640461160653 - 2² = 640461160649 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (640461160643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189596050 + ... + 189599427.

It is an arithmetic number, because the mean of its divisors is an integer number (106933124796).

Almost surely, 2^640461160653 is an apocalyptic number.

It is an amenable number.

640461160653 is a deficient number, since it is larger than the sum of its proper divisors (215003837715).

640461160653 is a wasteful number, since it uses less digits than its factorization.

640461160653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379196043.

The product of its (nonzero) digits is 311040, while the sum is 42.

The spelling of 640461160653 in words is "six hundred forty billion, four hundred sixty-one million, one hundred sixty thousand, six hundred fifty-three".