640420153054 has 16 divisors (see below), whose sum is σ = 1047979750896. Its totient is φ = 291094652800.

The previous prime is 640420153039. The next prime is 640420153081. The reversal of 640420153054 is 450351024046.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1090344 + ... + 1571524.

It is an arithmetic number, because the mean of its divisors is an integer number (65498734431).

Almost surely, 2^640420153054 is an apocalyptic number.

640420153054 is a deficient number, since it is larger than the sum of its proper divisors (407559597842).

640420153054 is a wasteful number, since it uses less digits than its factorization.

640420153054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541691.

The product of its (nonzero) digits is 57600, while the sum is 34.

The spelling of 640420153054 in words is "six hundred forty billion, four hundred twenty million, one hundred fifty-three thousand, fifty-four".