2251755740263 has 4 divisors (see below), whose sum is σ = 2252477691360. Its totient is φ = 2251033789168.

The previous prime is 2251755740249. The next prime is 2251755740291. The reversal of 2251755740263 is 3620475571522.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2251755740263 is a prime.

It is a super-3 number, since 3×2251755740263³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2251755740363) 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, 360970870 + ... + 360977107.

It is an arithmetic number, because the mean of its divisors is an integer number (563119422840).

Almost surely, 2^{2251755740263} is an apocalyptic number.

2251755740263 is a deficient number, since it is larger than the sum of its proper divisors (721951097).

2251755740263 is an equidigital number, since it uses as much as digits as its factorization.

2251755740263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721951096.

The product of its (nonzero) digits is 3528000, while the sum is 49.

The spelling of 2251755740263 in words is "two trillion, two hundred fifty-one billion, seven hundred fifty-five million, seven hundred forty thousand, two hundred sixty-three".