2665899109248 has 128 divisors (see below), whose sum is σ = 7192134827520. Its totient is φ = 874742685696.

The previous prime is 2665899109243. The next prime is 2665899109267. The reversal of 2665899109248 is 8429019985662.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2665899109243) 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, 36574536 + ... + 36647352.

It is an arithmetic number, because the mean of its divisors is an integer number (56188553340).

Almost surely, 2^{2665899109248} 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 2665899109248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3596067413760).

2665899109248 is an abundant number, since it is smaller than the sum of its proper divisors (4526235718272).

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

2665899109248 is a wasteful number, since it uses less digits than its factorization.

2665899109248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74324 (or 74312 counting only the distinct ones).

The product of its (nonzero) digits is 134369280, while the sum is 69.

The spelling of 2665899109248 in words is "two trillion, six hundred sixty-five billion, eight hundred ninety-nine million, one hundred nine thousand, two hundred forty-eight".