2260726051661 has 32 divisors (see below), whose sum is σ = 2851032038400. Its totient is φ = 1741423236480.

The previous prime is 2260726051603. The next prime is 2260726051693. The reversal of 2260726051661 is 1661506270622.

It is a cyclic number.

It is not a de Polignac number, because 2260726051661 - 2²² = 2260721857357 is a prime.

It is a super-2 number, since 2×2260726051661² (a number of 26 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2260726051561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2040530 + ... + 2947068.

It is an arithmetic number, because the mean of its divisors is an integer number (89094751200).

Almost surely, 2^{2260726051661} is an apocalyptic number.

It is an amenable number.

2260726051661 is a deficient number, since it is larger than the sum of its proper divisors (590305986739).

2260726051661 is a wasteful number, since it uses less digits than its factorization.

2260726051661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906929.

The product of its (nonzero) digits is 362880, while the sum is 44.

The spelling of 2260726051661 in words is "two trillion, two hundred sixty billion, seven hundred twenty-six million, fifty-one thousand, six hundred sixty-one".