40849137547 has 4 divisors (see below), whose sum is σ = 41032317760. Its totient is φ = 40665957336.

The previous prime is 40849137529. The next prime is 40849137617. The reversal of 40849137547 is 74573194804.

It is a happy number.

40849137547 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40849137547 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40849137494 and 40849137503.

It is not an unprimeable number, because it can be changed into a prime (40849137947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91589772 + ... + 91590217.

It is an arithmetic number, because the mean of its divisors is an integer number (10258079440).

Almost surely, 2^40849137547 is an apocalyptic number.

40849137547 is a deficient number, since it is larger than the sum of its proper divisors (183180213).

40849137547 is a wasteful number, since it uses less digits than its factorization.

40849137547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183180212.

The product of its (nonzero) digits is 3386880, while the sum is 52.

The spelling of 40849137547 in words is "forty billion, eight hundred forty-nine million, one hundred thirty-seven thousand, five hundred forty-seven".