64144244146 has 16 divisors (see below), whose sum is σ = 100948324608. Its totient is φ = 30528723600.

The previous prime is 64144244137. The next prime is 64144244147.

64144244146 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×64144244146² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64144244099 and 64144244108.

It is not an unprimeable number, because it can be changed into a prime (64144244147) 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, 8476420 + ... + 8483983.

It is an arithmetic number, because the mean of its divisors is an integer number (6309270288).

Almost surely, 2^64144244146 is an apocalyptic number.

64144244146 is a deficient number, since it is larger than the sum of its proper divisors (36804080462).

64144244146 is a wasteful number, since it uses less digits than its factorization.

64144244146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16960497.

The product of its digits is 294912, while the sum is 40.

The spelling of 64144244146 in words is "sixty-four billion, one hundred forty-four million, two hundred forty-four thousand, one hundred forty-six".