40131743851 has 2 divisors, whose sum is σ = 40131743852. Its totient is φ = 40131743850.

The previous prime is 40131743849. The next prime is 40131743857. The reversal of 40131743851 is 15834713104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40131743851 - 2¹ = 40131743849 is a prime.

It is a super-2 number, since 2×40131743851² (a number of 22 digits) contains 22 as substring.

Together with 40131743849, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 40131743851.

It is not a weakly prime, because it can be changed into another prime (40131743857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20065871925 + 20065871926.

It is an arithmetic number, because the mean of its divisors is an integer number (20065871926).

Almost surely, 2^40131743851 is an apocalyptic number.

40131743851 is a deficient number, since it is larger than the sum of its proper divisors (1).

40131743851 is an equidigital number, since it uses as much as digits as its factorization.

40131743851 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 37.

The spelling of 40131743851 in words is "forty billion, one hundred thirty-one million, seven hundred forty-three thousand, eight hundred fifty-one".