64349870129 has 16 divisors (see below), whose sum is σ = 67097859840. Its totient is φ = 61675024320.

The previous prime is 64349870119. The next prime is 64349870191. The reversal of 64349870129 is 92107894346.

It is a cyclic number.

It is not a de Polignac number, because 64349870129 - 2²⁸ = 64081434673 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64349870119) 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 15 ways as a sum of consecutive naturals, for example, 331724 + ... + 488610.

It is an arithmetic number, because the mean of its divisors is an integer number (4193616240).

Almost surely, 2^64349870129 is an apocalyptic number.

It is an amenable number.

64349870129 is a deficient number, since it is larger than the sum of its proper divisors (2747989711).

64349870129 is a wasteful number, since it uses less digits than its factorization.

64349870129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157120.

The product of its (nonzero) digits is 2612736, while the sum is 53.

The spelling of 64349870129 in words is "sixty-four billion, three hundred forty-nine million, eight hundred seventy thousand, one hundred twenty-nine".