49009251911 has 2 divisors, whose sum is σ = 49009251912. Its totient is φ = 49009251910.

The previous prime is 49009251901. The next prime is 49009251913. The reversal of 49009251911 is 11915290094.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49009251911 is a prime.

Together with 49009251913, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49009251913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24504625955 + 24504625956.

It is an arithmetic number, because the mean of its divisors is an integer number (24504625956).

Almost surely, 2^49009251911 is an apocalyptic number.

49009251911 is a deficient number, since it is larger than the sum of its proper divisors (1).

49009251911 is an equidigital number, since it uses as much as digits as its factorization.

49009251911 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 41.

The spelling of 49009251911 in words is "forty-nine billion, nine million, two hundred fifty-one thousand, nine hundred eleven".