64768709190 has 32 divisors (see below), whose sum is σ = 164588721120. Its totient is φ = 16255675904.

The previous prime is 64768709183. The next prime is 64768709219. The reversal of 64768709190 is 9190786746.

It is a super-2 number, since 2×64768709190² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64768709190.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63498225 + ... + 63499244.

It is an arithmetic number, because the mean of its divisors is an integer number (5143397535).

Almost surely, 2^64768709190 is an apocalyptic number.

64768709190 is an abundant number, since it is smaller than the sum of its proper divisors (99820011930).

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

64768709190 is a wasteful number, since it uses less digits than its factorization.

64768709190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126997496.

The product of its (nonzero) digits is 4572288, while the sum is 57.

The spelling of 64768709190 in words is "sixty-four billion, seven hundred sixty-eight million, seven hundred nine thousand, one hundred ninety".