64143879429 has 32 divisors (see below), whose sum is σ = 102072029184. Its totient is φ = 35032757760.

The previous prime is 64143879413. The next prime is 64143879469. The reversal of 64143879429 is 92497834146.

It is not a de Polignac number, because 64143879429 - 2⁴ = 64143879413 is a prime.

It is a super-2 number, since 2×64143879429² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64143879469) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 578389 + ... + 680309.

It is an arithmetic number, because the mean of its divisors is an integer number (3189750912).

Almost surely, 2^64143879429 is an apocalyptic number.

64143879429 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

It is an amenable number.

64143879429 is a deficient number, since it is larger than the sum of its proper divisors (37928149755).

64143879429 is a wasteful number, since it uses less digits than its factorization.

64143879429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103257.

The product of its digits is 10450944, while the sum is 57.

The spelling of 64143879429 in words is "sixty-four billion, one hundred forty-three million, eight hundred seventy-nine thousand, four hundred twenty-nine".