640210417293 has 8 divisors (see below), whose sum is σ = 853660590688. Its totient is φ = 426783594384.

The previous prime is 640210417291. The next prime is 640210417313. The reversal of 640210417293 is 392714012046.

640210417293 is digitally balanced in base 2 and base 4, because in such bases 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 not a de Polignac number, because 640210417293 - 2¹ = 640210417291 is a prime.

It is the 800132-nd Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (640210417291) by changing a digit.

It is a nontrivial repunit in base 800131.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5773546 + ... + 5883387.

It is an arithmetic number, because the mean of its divisors is an integer number (106707573836).

Almost surely, 2^640210417293 is an apocalyptic number.

It is an amenable number.

640210417293 is a deficient number, since it is larger than the sum of its proper divisors (213450173395).

640210417293 is a wasteful number, since it uses less digits than its factorization.

640210417293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11675243.

The product of its (nonzero) digits is 72576, while the sum is 39.

The spelling of 640210417293 in words is "six hundred forty billion, two hundred ten million, four hundred seventeen thousand, two hundred ninety-three".