2250162666561 has 4 divisors (see below), whose sum is σ = 3000216888752. Its totient is φ = 1500108444372.

The previous prime is 2250162666547. The next prime is 2250162666593. The reversal of 2250162666561 is 1656662610522.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2250162666561 - 2³¹ = 2248015182913 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2250162666561.

It is not an unprimeable number, because it can be changed into a prime (2250162661561) 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, 375027111091 + ... + 375027111096.

It is an arithmetic number, because the mean of its divisors is an integer number (750054222188).

Almost surely, 2^{2250162666561} is an apocalyptic number.

It is an amenable number.

2250162666561 is a deficient number, since it is larger than the sum of its proper divisors (750054222191).

2250162666561 is an equidigital number, since it uses as much as digits as its factorization.

2250162666561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750054222190.

The product of its (nonzero) digits is 1555200, while the sum is 48.

The spelling of 2250162666561 in words is "two trillion, two hundred fifty billion, one hundred sixty-two million, six hundred sixty-six thousand, five hundred sixty-one".