1610644251136 has 80 divisors (see below), whose sum is σ = 3280714351200. Its totient is φ = 789730910208.

The previous prime is 1610644251119. The next prime is 1610644251149. The reversal of 1610644251136 is 6311524460161.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12289891 + ... + 12420253.

It is an arithmetic number, because the mean of its divisors is an integer number (41008929390).

Almost surely, 2^{1610644251136} is an apocalyptic number.

1610644251136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1610644251136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1640357175600).

1610644251136 is an abundant number, since it is smaller than the sum of its proper divisors (1670070100064).

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

1610644251136 is an equidigital number, since it uses as much as digits as its factorization.

1610644251136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130849 (or 130833 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 1610644251136 in words is "one trillion, six hundred ten billion, six hundred forty-four million, two hundred fifty-one thousand, one hundred thirty-six".