2261650465666 has 8 divisors (see below), whose sum is σ = 3539974641984. Its totient is φ = 1081658918340.

The previous prime is 2261650465663. The next prime is 2261650465687. The reversal of 2261650465666 is 6665640561622.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2261650465663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24583157190 + ... + 24583157281.

It is an arithmetic number, because the mean of its divisors is an integer number (442496830248).

Almost surely, 2^{2261650465666} is an apocalyptic number.

2261650465666 is a deficient number, since it is larger than the sum of its proper divisors (1278324176318).

2261650465666 is a wasteful number, since it uses less digits than its factorization.

2261650465666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49166314496.

The product of its (nonzero) digits is 18662400, while the sum is 55.

The spelling of 2261650465666 in words is "two trillion, two hundred sixty-one billion, six hundred fifty million, four hundred sixty-five thousand, six hundred sixty-six".