64895642299 has 16 divisors (see below), whose sum is σ = 68574844800. Its totient is φ = 61243055424.

The previous prime is 64895642281. The next prime is 64895642303. The reversal of 64895642299 is 99224659846.

It is a cyclic number.

It is not a de Polignac number, because 64895642299 - 2⁵ = 64895642267 is a prime.

It is a super-2 number, since 2×64895642299² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64895642299.

It is not an unprimeable number, because it can be changed into a prime (64895642209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18716364 + ... + 18719830.

It is an arithmetic number, because the mean of its divisors is an integer number (4285927800).

Almost surely, 2^64895642299 is an apocalyptic number.

64895642299 is a deficient number, since it is larger than the sum of its proper divisors (3679202501).

64895642299 is a wasteful number, since it uses less digits than its factorization.

64895642299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7002.

The product of its digits is 67184640, while the sum is 64.

The spelling of 64895642299 in words is "sixty-four billion, eight hundred ninety-five million, six hundred forty-two thousand, two hundred ninety-nine".