2661202544 has 160 divisors (see below), whose sum is σ = 7066214400. Its totient is φ = 956793600.

The previous prime is 2661202519. The next prime is 2661202549. The reversal of 2661202544 is 4452021662.

It is a self number, because there is not a number n which added to its sum of digits gives 2661202544.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2661202549) 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, 783089 + ... + 786479.

It is an arithmetic number, because the mean of its divisors is an integer number (44163840).

Almost surely, 2^2661202544 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 2661202544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3533107200).

2661202544 is an abundant number, since it is smaller than the sum of its proper divisors (4405011856).

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

2661202544 is a wasteful number, since it uses less digits than its factorization.

2661202544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3444 (or 3424 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 2661202544 is about 51586.8446796274. The cubic root of 2661202544 is about 1385.7747482801.

The spelling of 2661202544 in words is "two billion, six hundred sixty-one million, two hundred two thousand, five hundred forty-four".