64151640366 has 96 divisors (see below), whose sum is σ = 145098399264. Its totient is φ = 18880646400.

The previous prime is 64151640269. The next prime is 64151640379. The reversal of 64151640366 is 66304615146.

It is a super-2 number, since 2×64151640366² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17753976 + ... + 17757588.

It is an arithmetic number, because the mean of its divisors is an integer number (1511441659).

Almost surely, 2^64151640366 is an apocalyptic number.

64151640366 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 64151640366, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72549199632).

64151640366 is an abundant number, since it is smaller than the sum of its proper divisors (80946758898).

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

64151640366 is a wasteful number, since it uses less digits than its factorization.

64151640366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4338 (or 4327 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 42.

The spelling of 64151640366 in words is "sixty-four billion, one hundred fifty-one million, six hundred forty thousand, three hundred sixty-six".