64142268697 has 8 divisors (see below), whose sum is σ = 69156903816. Its totient is φ = 59139149952.

The previous prime is 64142268691. The next prime is 64142268721. The reversal of 64142268697 is 79686224146.

It can be written as a sum of positive squares in 4 ways, for example, as 34708062601 + 29434206096 = 186301^2 + 171564^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64142268697 - 2³¹ = 61994785049 is a prime.

It is a super-2 number, since 2×64142268697² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64142268691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2867518 + ... + 2889799.

It is an arithmetic number, because the mean of its divisors is an integer number (8644612977).

Almost surely, 2^64142268697 is an apocalyptic number.

It is an amenable number.

64142268697 is a deficient number, since it is larger than the sum of its proper divisors (5014635119).

64142268697 is a wasteful number, since it uses less digits than its factorization.

64142268697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5758187.

The product of its digits is 6967296, while the sum is 55.

The spelling of 64142268697 in words is "sixty-four billion, one hundred forty-two million, two hundred sixty-eight thousand, six hundred ninety-seven".