49311531845 has 8 divisors (see below), whose sum is σ = 59480439576. Its totient is φ = 39244824576.

The previous prime is 49311531827. The next prime is 49311531847. The reversal of 49311531845 is 54813511394.

49311531845 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 222062²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 1 + 49311531844 = 1^2 + 222062^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49311531845 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 49311531796 and 49311531805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49311531847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25549052 + ... + 25550981.

It is an arithmetic number, because the mean of its divisors is an integer number (7435054947).

Almost surely, 2^49311531845 is an apocalyptic number.

It is an amenable number.

49311531845 is a deficient number, since it is larger than the sum of its proper divisors (10168907731).

49311531845 is a wasteful number, since it uses less digits than its factorization.

49311531845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51100231.

The product of its digits is 259200, while the sum is 44.

The spelling of 49311531845 in words is "forty-nine billion, three hundred eleven million, five hundred thirty-one thousand, eight hundred forty-five".