2261660512650 has 96 divisors (see below), whose sum is σ = 6992936851968. Its totient is φ = 469955428800.

The previous prime is 2261660512627. The next prime is 2261660512651. The reversal of 2261660512650 is 562150661622.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (2261660512651) 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 47 ways as a sum of consecutive naturals, for example, 97895832 + ... + 97918931.

It is an arithmetic number, because the mean of its divisors is an integer number (72843092208).

Almost surely, 2^{2261660512650} is an apocalyptic number.

2261660512650 is an abundant number, since it is smaller than the sum of its proper divisors (4731276339318).

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

2261660512650 is a wasteful number, since it uses less digits than its factorization.

2261660512650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195814796 (or 195814791 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 42.

The spelling of 2261660512650 in words is "two trillion, two hundred sixty-one billion, six hundred sixty million, five hundred twelve thousand, six hundred fifty".