254373426781 has 2 divisors, whose sum is σ = 254373426782. Its totient is φ = 254373426780.

The previous prime is 254373426739. The next prime is 254373426787. The reversal of 254373426781 is 187624373452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 250666443556 + 3706983225 = 500666^2 + 60885^2 .

It is a cyclic number.

It is not a de Polignac number, because 254373426781 - 2¹⁵ = 254373394013 is a prime.

It is a super-2 number, since 2×254373426781² (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 (254373426787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127186713390 + 127186713391.

It is an arithmetic number, because the mean of its divisors is an integer number (127186713391).

Almost surely, 2^254373426781 is an apocalyptic number.

It is an amenable number.

254373426781 is a deficient number, since it is larger than the sum of its proper divisors (1).

254373426781 is an equidigital number, since it uses as much as digits as its factorization.

254373426781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6773760, while the sum is 52.

The spelling of 254373426781 in words is "two hundred fifty-four billion, three hundred seventy-three million, four hundred twenty-six thousand, seven hundred eighty-one".