1611210873444 has 96 divisors (see below), whose sum is σ = 3946080405120. Its totient is φ = 510970457088.

The previous prime is 1611210873409. The next prime is 1611210873499. The reversal of 1611210873444 is 4443780121161.

It is a super-2 number, since 2×1611210873444² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1611210873396 and 1611210873405.

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, 27737559 + ... + 27795585.

It is an arithmetic number, because the mean of its divisors is an integer number (41105004220).

Almost surely, 2^{1611210873444} 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 1611210873444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1973040202560).

1611210873444 is an abundant number, since it is smaller than the sum of its proper divisors (2334869531676).

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

1611210873444 is a wasteful number, since it uses less digits than its factorization.

1611210873444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59229 (or 59227 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The spelling of 1611210873444 in words is "one trillion, six hundred eleven billion, two hundred ten million, eight hundred seventy-three thousand, four hundred forty-four".