640146105357 has 64 divisors (see below), whose sum is σ = 975752386560. Its totient is φ = 369727635200.

The previous prime is 640146105343. The next prime is 640146105383. The reversal of 640146105357 is 753501641046.

It is not a de Polignac number, because 640146105357 - 2⁷ = 640146105229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (640146105317) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 101430232 + ... + 101436542.

It is an arithmetic number, because the mean of its divisors is an integer number (15246131040).

Almost surely, 2^640146105357 is an apocalyptic number.

It is an amenable number.

640146105357 is a deficient number, since it is larger than the sum of its proper divisors (335606281203).

640146105357 is a wasteful number, since it uses less digits than its factorization.

640146105357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7714.

The product of its (nonzero) digits is 302400, while the sum is 42.

The spelling of 640146105357 in words is "six hundred forty billion, one hundred forty-six million, one hundred five thousand, three hundred fifty-seven".