2660935889745 has 144 divisors (see below), whose sum is σ = 5568772809600. Its totient is φ = 1151255130624.

The previous prime is 2660935889743. The next prime is 2660935889819. The reversal of 2660935889745 is 5479885390662.

It is a happy number.

2660935889745 is a `hidden beast` number, since 2 + 6 + 609 + 3 + 5 + 8 + 8 + 9 + 7 + 4 + 5 = 666.

It is not a de Polignac number, because 2660935889745 - 2¹ = 2660935889743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2660935889743) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 119275882 + ... + 119298188.

It is an arithmetic number, because the mean of its divisors is an integer number (38672033400).

Almost surely, 2^{2660935889745} is an apocalyptic number.

It is an amenable number.

2660935889745 is an abundant number, since it is smaller than the sum of its proper divisors (2907836919855).

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

2660935889745 is a wasteful number, since it uses less digits than its factorization.

2660935889745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23412 (or 23390 counting only the distinct ones).

The product of its (nonzero) digits is 783820800, while the sum is 72.

The spelling of 2660935889745 in words is "two trillion, six hundred sixty billion, nine hundred thirty-five million, eight hundred eighty-nine thousand, seven hundred forty-five".