64136746305 has 48 divisors (see below), whose sum is σ = 112791968640. Its totient is φ = 33707788800.

The previous prime is 64136746217. The next prime is 64136746307. The reversal of 64136746305 is 50364763146.

64136746305 is a `hidden beast` number, since 6 + 4 + 1 + 3 + 6 + 7 + 4 + 630 + 5 = 666.

It is not a de Polignac number, because 64136746305 - 2⁸ = 64136746049 is a prime.

It is a super-2 number, since 2×64136746305² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (64136746307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9003145 + ... + 9010265.

It is an arithmetic number, because the mean of its divisors is an integer number (2349832680).

Almost surely, 2^64136746305 is an apocalyptic number.

It is an amenable number.

64136746305 is a deficient number, since it is larger than the sum of its proper divisors (48655222335).

64136746305 is a wasteful number, since it uses less digits than its factorization.

64136746305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10022 (or 10019 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 45.

The spelling of 64136746305 in words is "sixty-four billion, one hundred thirty-six million, seven hundred forty-six thousand, three hundred five".