640462124236 has 24 divisors (see below), whose sum is σ = 1223108102160. Its totient is φ = 291022080000.

The previous prime is 640462124221. The next prime is 640462124279. The reversal of 640462124236 is 632421264046.

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, 2293141 + ... + 2557228.

It is an arithmetic number, because the mean of its divisors is an integer number (50962837590).

Almost surely, 2^640462124236 is an apocalyptic number.

It is an amenable number.

640462124236 is a deficient number, since it is larger than the sum of its proper divisors (582645977924).

640462124236 is a wasteful number, since it uses less digits than its factorization.

640462124236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4853385 (or 4853383 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 40.

The spelling of 640462124236 in words is "six hundred forty billion, four hundred sixty-two million, one hundred twenty-four thousand, two hundred thirty-six".