640475167324 has 12 divisors (see below), whose sum is σ = 1131713403184. Its totient is φ = 317128480704.

The previous prime is 640475167301. The next prime is 640475167337. The reversal of 640475167324 is 423761574046.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 777275277 + ... + 777276100.

Almost surely, 2^640475167324 is an apocalyptic number.

It is an amenable number.

640475167324 is a deficient number, since it is larger than the sum of its proper divisors (491238235860).

640475167324 is a wasteful number, since it uses less digits than its factorization.

640475167324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1554551484 (or 1554551482 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 49.

The spelling of 640475167324 in words is "six hundred forty billion, four hundred seventy-five million, one hundred sixty-seven thousand, three hundred twenty-four".