64757326386 has 16 divisors (see below), whose sum is σ = 129551583168. Its totient is φ = 21579620400.

The previous prime is 64757326363. The next prime is 64757326429. The reversal of 64757326386 is 68362375746.

64757326386 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×64757326386² (a number of 22 digits) contains 22 as substring.

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, 1515945 + ... + 1558076.

It is an arithmetic number, because the mean of its divisors is an integer number (8096973948).

Almost surely, 2^64757326386 is an apocalyptic number.

64757326386 is an abundant number, since it is smaller than the sum of its proper divisors (64794256782).

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

64757326386 is a wasteful number, since it uses less digits than its factorization.

64757326386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3077537.

The product of its digits is 30481920, while the sum is 57.

The spelling of 64757326386 in words is "sixty-four billion, seven hundred fifty-seven million, three hundred twenty-six thousand, three hundred eighty-six".