40837742447 has 2 divisors, whose sum is σ = 40837742448. Its totient is φ = 40837742446.

The previous prime is 40837742443. The next prime is 40837742467. The reversal of 40837742447 is 74424773804.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40837742447 - 2² = 40837742443 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40837742395 and 40837742404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40837742443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20418871223 + 20418871224.

It is an arithmetic number, because the mean of its divisors is an integer number (20418871224).

Almost surely, 2^40837742447 is an apocalyptic number.

40837742447 is a deficient number, since it is larger than the sum of its proper divisors (1).

40837742447 is an equidigital number, since it uses as much as digits as its factorization.

40837742447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4214784, while the sum is 50.

The spelling of 40837742447 in words is "forty billion, eight hundred thirty-seven million, seven hundred forty-two thousand, four hundred forty-seven".