49451273279 has 2 divisors, whose sum is σ = 49451273280. Its totient is φ = 49451273278.

The previous prime is 49451273269. The next prime is 49451273317. The reversal of 49451273279 is 97237215494.

49451273279 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 is a cyclic number.

It is not a de Polignac number, because 49451273279 - 2⁸ = 49451273023 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 49451273279.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49451273239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24725636639 + 24725636640.

It is an arithmetic number, because the mean of its divisors is an integer number (24725636640).

Almost surely, 2^49451273279 is an apocalyptic number.

49451273279 is a deficient number, since it is larger than the sum of its proper divisors (1).

49451273279 is an equidigital number, since it uses as much as digits as its factorization.

49451273279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3810240, while the sum is 53.

The spelling of 49451273279 in words is "forty-nine billion, four hundred fifty-one million, two hundred seventy-three thousand, two hundred seventy-nine".