2451550442281 has 2 divisors, whose sum is σ = 2451550442282. Its totient is φ = 2451550442280.

The previous prime is 2451550442267. The next prime is 2451550442377. The reversal of 2451550442281 is 1822440551542.

2451550442281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2023389606681 + 428160835600 = 1422459^2 + 654340^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2451550442281 is a prime.

It is a super-2 number, since 2×2451550442281² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2451550442381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1225775221140 + 1225775221141.

It is an arithmetic number, because the mean of its divisors is an integer number (1225775221141).

Almost surely, 2^{2451550442281} is an apocalyptic number.

It is an amenable number.

2451550442281 is a deficient number, since it is larger than the sum of its proper divisors (1).

2451550442281 is an equidigital number, since it uses as much as digits as its factorization.

2451550442281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 512000, while the sum is 43.

The spelling of 2451550442281 in words is "two trillion, four hundred fifty-one billion, five hundred fifty million, four hundred forty-two thousand, two hundred eighty-one".