49910511397 has 2 divisors, whose sum is σ = 49910511398. Its totient is φ = 49910511396.

The previous prime is 49910511349. The next prime is 49910511401. The reversal of 49910511397 is 79311501994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47173233636 + 2737277761 = 217194^2 + 52319^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49910511397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 49910511397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49910511337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24955255698 + 24955255699.

It is an arithmetic number, because the mean of its divisors is an integer number (24955255699).

Almost surely, 2^49910511397 is an apocalyptic number.

It is an amenable number.

49910511397 is a deficient number, since it is larger than the sum of its proper divisors (1).

49910511397 is an equidigital number, since it uses as much as digits as its factorization.

49910511397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 306180, while the sum is 49.

The spelling of 49910511397 in words is "forty-nine billion, nine hundred ten million, five hundred eleven thousand, three hundred ninety-seven".