2149254727639 has 2 divisors, whose sum is σ = 2149254727640. Its totient is φ = 2149254727638.

The previous prime is 2149254727621. The next prime is 2149254727643. The reversal of 2149254727639 is 9367274529412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2149254727639 - 2¹⁵ = 2149254694871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2149254727649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1074627363819 + 1074627363820.

It is an arithmetic number, because the mean of its divisors is an integer number (1074627363820).

Almost surely, 2^{2149254727639} is an apocalyptic number.

2149254727639 is a deficient number, since it is larger than the sum of its proper divisors (1).

2149254727639 is an equidigital number, since it uses as much as digits as its factorization.

2149254727639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45722880, while the sum is 61.

The spelling of 2149254727639 in words is "two trillion, one hundred forty-nine billion, two hundred fifty-four million, seven hundred twenty-seven thousand, six hundred thirty-nine".