1439846681064 has 128 divisors (see below), whose sum is σ = 4173192161280. Its totient is φ = 409135795200.

The previous prime is 1439846681041. The next prime is 1439846681071. The reversal of 1439846681064 is 4601866489341.

It is a happy number.

It is a super-2 number, since 2×1439846681064² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1439846680989 and 1439846681007.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 624327 + ... + 1808169.

It is an arithmetic number, because the mean of its divisors is an integer number (32603063760).

Almost surely, 2^{1439846681064} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1439846681064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2086596080640).

1439846681064 is an abundant number, since it is smaller than the sum of its proper divisors (2733345480216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1439846681064 is a wasteful number, since it uses less digits than its factorization.

1439846681064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1184151 (or 1184147 counting only the distinct ones).

The product of its (nonzero) digits is 23887872, while the sum is 60.

The spelling of 1439846681064 in words is "one trillion, four hundred thirty-nine billion, eight hundred forty-six million, six hundred eighty-one thousand, sixty-four".