2661051223340 has 24 divisors (see below), whose sum is σ = 5588239334832. Its totient is φ = 1064414438720.

The previous prime is 2661051223339. The next prime is 2661051223349. The reversal of 2661051223340 is 433221501662.

It is a super-2 number, since 2×2661051223340² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2661051223340.

It is not an unprimeable number, because it can be changed into a prime (2661051223349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5328770 + ... + 5806710.

It is an arithmetic number, because the mean of its divisors is an integer number (232843305618).

Almost surely, 2^{2661051223340} is an apocalyptic number.

2661051223340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2661051223340 is an abundant number, since it is smaller than the sum of its proper divisors (2927188111492).

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

2661051223340 is a wasteful number, since it uses less digits than its factorization.

2661051223340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756337 (or 756335 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The spelling of 2661051223340 in words is "two trillion, six hundred sixty-one billion, fifty-one million, two hundred twenty-three thousand, three hundred forty".