244149051781 has 2 divisors, whose sum is σ = 244149051782. Its totient is φ = 244149051780.

The previous prime is 244149051719. The next prime is 244149051791. The reversal of 244149051781 is 187150941442.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 242695154881 + 1453896900 = 492641^2 + 38130^2 .

It is a cyclic number.

It is not a de Polignac number, because 244149051781 - 2¹⁷ = 244148920709 is a prime.

It is a super-2 number, since 2×244149051781² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (244149051791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122074525890 + 122074525891.

It is an arithmetic number, because the mean of its divisors is an integer number (122074525891).

Almost surely, 2^244149051781 is an apocalyptic number.

It is an amenable number.

244149051781 is a deficient number, since it is larger than the sum of its proper divisors (1).

244149051781 is an equidigital number, since it uses as much as digits as its factorization.

244149051781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 322560, while the sum is 46.

The spelling of 244149051781 in words is "two hundred forty-four billion, one hundred forty-nine million, fifty-one thousand, seven hundred eighty-one".