64819217501332 has 48 divisors (see below), whose sum is σ = 142394619709440. Its totient is φ = 25173334546272.

The previous prime is 64819217501317. The next prime is 64819217501399. The reversal of 64819217501332 is 23310571291846.

It is a self number, because there is not a number n which added to its sum of digits gives 64819217501332.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2648697208 + ... + 2648721679.

It is an arithmetic number, because the mean of its divisors is an integer number (2966554577280).

It is a 1-persistent number, because it is pandigital, but 2⋅64819217501332 = 129638435002664 is not.

Almost surely, 2^{64819217501332} is an apocalyptic number.

It is an amenable number.

64819217501332 is an abundant number, since it is smaller than the sum of its proper divisors (77575402208108).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64819217501332 is a wasteful number, since it uses less digits than its factorization.

64819217501332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5297418940 (or 5297418938 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 52.

The spelling of 64819217501332 in words is "sixty-four trillion, eight hundred nineteen billion, two hundred seventeen million, five hundred one thousand, three hundred thirty-two".