2661601015024 has 80 divisors (see below), whose sum is σ = 5973592715200. Its totient is φ = 1125284493312.

The previous prime is 2661601015019. The next prime is 2661601015027. The reversal of 2661601015024 is 4205101061662.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2661601015027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2319604 + ... + 3271660.

It is an arithmetic number, because the mean of its divisors is an integer number (74669908940).

Almost surely, 2^{2661601015024} 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 2661601015024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2986796357600).

2661601015024 is an abundant number, since it is smaller than the sum of its proper divisors (3311991700176).

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

2661601015024 is a wasteful number, since it uses less digits than its factorization.

2661601015024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 952410 (or 952404 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

Adding to 2661601015024 its reverse (4205101061662), we get a palindrome (6866702076686).

The spelling of 2661601015024 in words is "two trillion, six hundred sixty-one billion, six hundred one million, fifteen thousand, twenty-four".