640436014126 has 8 divisors (see below), whose sum is σ = 960750030240. Its totient is φ = 320186004048.

The previous prime is 640436014081. The next prime is 640436014151. The reversal of 640436014126 is 621410634046.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15976486 + ... + 16016521.

It is an arithmetic number, because the mean of its divisors is an integer number (120093753780).

Almost surely, 2^640436014126 is an apocalyptic number.

640436014126 is a deficient number, since it is larger than the sum of its proper divisors (320314016114).

640436014126 is a wasteful number, since it uses less digits than its factorization.

640436014126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32003018.

The product of its (nonzero) digits is 82944, while the sum is 37.

The spelling of 640436014126 in words is "six hundred forty billion, four hundred thirty-six million, fourteen thousand, one hundred twenty-six".