2665106140 has 48 divisors (see below), whose sum is σ = 5861882880. Its totient is φ = 1015882560.

The previous prime is 2665106131. The next prime is 2665106173. The reversal of 2665106140 is 416015662.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113971 + ... + 135349.

It is an arithmetic number, because the mean of its divisors is an integer number (122122560).

Almost surely, 2^2665106140 is an apocalyptic number.

2665106140 is a gapful number since it is divisible by the number (20) 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 2665106140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2930941440).

2665106140 is an abundant number, since it is smaller than the sum of its proper divisors (3196776740).

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

2665106140 is a wasteful number, since it uses less digits than its factorization.

2665106140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21682 (or 21680 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 2665106140 is about 51624.6660037622. Note that the first 3 decimals coincide. The cubic root of 2665106140 is about 1386.4519937288.

The spelling of 2665106140 in words is "two billion, six hundred sixty-five million, one hundred six thousand, one hundred forty".