640266426035 has 8 divisors (see below), whose sum is σ = 768339666240. Its totient is φ = 512199837504.

The previous prime is 640266426017. The next prime is 640266426047. The reversal of 640266426035 is 530624662046.

640266426035 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 cyclic number.

It is not a de Polignac number, because 640266426035 - 2¹⁶ = 640266360499 is a prime.

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, 1448642 + ... + 1838231.

It is an arithmetic number, because the mean of its divisors is an integer number (96042458280).

Almost surely, 2^640266426035 is an apocalyptic number.

640266426035 is a deficient number, since it is larger than the sum of its proper divisors (128073240205).

640266426035 is a wasteful number, since it uses less digits than its factorization.

640266426035 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3325837.

The product of its (nonzero) digits is 1244160, while the sum is 44.

The spelling of 640266426035 in words is "six hundred forty billion, two hundred sixty-six million, four hundred twenty-six thousand, thirty-five".