49236864881 has 2 divisors, whose sum is σ = 49236864882. Its totient is φ = 49236864880.

The previous prime is 49236864877. The next prime is 49236864899. The reversal of 49236864881 is 18846863294.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42726957025 + 6509907856 = 206705^2 + 80684^2 .

It is a cyclic number.

It is not a de Polignac number, because 49236864881 - 2² = 49236864877 is a prime.

It is a super-2 number, since 2×49236864881² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 49236864881.

It is not a weakly prime, because it can be changed into another prime (49236864851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24618432440 + 24618432441.

It is an arithmetic number, because the mean of its divisors is an integer number (24618432441).

Almost surely, 2^49236864881 is an apocalyptic number.

It is an amenable number.

49236864881 is a deficient number, since it is larger than the sum of its proper divisors (1).

49236864881 is an equidigital number, since it uses as much as digits as its factorization.

49236864881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15925248, while the sum is 59.

The spelling of 49236864881 in words is "forty-nine billion, two hundred thirty-six million, eight hundred sixty-four thousand, eight hundred eighty-one".