49129891243 has 2 divisors, whose sum is σ = 49129891244. Its totient is φ = 49129891242.

The previous prime is 49129891163. The next prime is 49129891289. The reversal of 49129891243 is 34219892194.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 49129891243 - 2¹³ = 49129883051 is a prime.

It is not a weakly prime, because it can be changed into another prime (49129891043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24564945621 + 24564945622.

It is an arithmetic number, because the mean of its divisors is an integer number (24564945622).

Almost surely, 2^49129891243 is an apocalyptic number.

49129891243 is a deficient number, since it is larger than the sum of its proper divisors (1).

49129891243 is an equidigital number, since it uses as much as digits as its factorization.

49129891243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1119744, while the sum is 52.

The spelling of 49129891243 in words is "forty-nine billion, one hundred twenty-nine million, eight hundred ninety-one thousand, two hundred forty-three".