64011331945 has 16 divisors (see below), whose sum is σ = 84015470592. Its totient is φ = 46432130560.

The previous prime is 64011331933. The next prime is 64011331981. The reversal of 64011331945 is 54913311046.

It is not a de Polignac number, because 64011331945 - 2¹⁷ = 64011200873 is a prime.

It is a Duffinian 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 15 ways as a sum of consecutive naturals, for example, 1498312 + ... + 1540441.

It is an arithmetic number, because the mean of its divisors is an integer number (5250966912).

Almost surely, 2^64011331945 is an apocalyptic number.

It is an amenable number.

64011331945 is a deficient number, since it is larger than the sum of its proper divisors (20004138647).

64011331945 is a wasteful number, since it uses less digits than its factorization.

64011331945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3039152.

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 64011331945 in words is "sixty-four billion, eleven million, three hundred thirty-one thousand, nine hundred forty-five".