2251000820737 has 2 divisors, whose sum is σ = 2251000820738. Its totient is φ = 2251000820736.

The previous prime is 2251000820729. The next prime is 2251000820743. The reversal of 2251000820737 is 7370280001522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1197906171121 + 1053094649616 = 1094489^2 + 1026204^2 .

It is a cyclic number.

It is not a de Polignac number, because 2251000820737 - 2³ = 2251000820729 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2251000820696 and 2251000820705.

It is not a weakly prime, because it can be changed into another prime (2251000820707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1125500410368 + 1125500410369.

It is an arithmetic number, because the mean of its divisors is an integer number (1125500410369).

Almost surely, 2^{2251000820737} is an apocalyptic number.

It is an amenable number.

2251000820737 is a deficient number, since it is larger than the sum of its proper divisors (1).

2251000820737 is an equidigital number, since it uses as much as digits as its factorization.

2251000820737 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47040, while the sum is 37.

The spelling of 2251000820737 in words is "two trillion, two hundred fifty-one billion, eight hundred twenty thousand, seven hundred thirty-seven".