2251770350565 has 32 divisors (see below), whose sum is σ = 3871700691840. Its totient is φ = 1113430247424.

The previous prime is 2251770350461. The next prime is 2251770350569. The reversal of 2251770350565 is 5650530771522.

It is not a de Polignac number, because 2251770350565 - 2¹¹ = 2251770348517 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2251770350569) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65881960 + ... + 65916129.

It is an arithmetic number, because the mean of its divisors is an integer number (120990646620).

Almost surely, 2^{2251770350565} is an apocalyptic number.

It is an amenable number.

2251770350565 is a deficient number, since it is larger than the sum of its proper divisors (1619930341275).

2251770350565 is a wasteful number, since it uses less digits than its factorization.

2251770350565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131798181.

The product of its (nonzero) digits is 2205000, while the sum is 48.

The spelling of 2251770350565 in words is "two trillion, two hundred fifty-one billion, seven hundred seventy million, three hundred fifty thousand, five hundred sixty-five".