40781725147 has 2 divisors, whose sum is σ = 40781725148. Its totient is φ = 40781725146.

The previous prime is 40781725133. The next prime is 40781725177. The reversal of 40781725147 is 74152718704.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40781725147 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40781725097 and 40781725106.

It is not a weakly prime, because it can be changed into another prime (40781725177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20390862573 + 20390862574.

It is an arithmetic number, because the mean of its divisors is an integer number (20390862574).

Almost surely, 2^40781725147 is an apocalyptic number.

40781725147 is a deficient number, since it is larger than the sum of its proper divisors (1).

40781725147 is an equidigital number, since it uses as much as digits as its factorization.

40781725147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 439040, while the sum is 46.

It can be divided in two parts, 407817 and 25147, that added together give a square (432964 = 658²).

The spelling of 40781725147 in words is "forty billion, seven hundred eighty-one million, seven hundred twenty-five thousand, one hundred forty-seven".