640275474358 has 8 divisors (see below), whose sum is σ = 1034291150928. Its totient is φ = 295511757384.

The previous prime is 640275474353. The next prime is 640275474359. The reversal of 640275474358 is 853474572046.

640275474358 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 a junction number, because it is equal to n+sod(n) for n = 640275474299 and 640275474308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (640275474353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12312989866 + ... + 12312989917.

It is an arithmetic number, because the mean of its divisors is an integer number (129286393866).

Almost surely, 2^640275474358 is an apocalyptic number.

640275474358 is a deficient number, since it is larger than the sum of its proper divisors (394015676570).

640275474358 is a wasteful number, since it uses less digits than its factorization.

640275474358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24625979798.

The product of its (nonzero) digits is 22579200, while the sum is 55.

The spelling of 640275474358 in words is "six hundred forty billion, two hundred seventy-five million, four hundred seventy-four thousand, three hundred fifty-eight".