40071972143 has 16 divisors (see below), whose sum is σ = 46087716864. Its totient is φ = 34129175040.

The previous prime is 40071972079. The next prime is 40071972151. The reversal of 40071972143 is 34127917004.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 40071972143 - 2⁶ = 40071972079 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40071972097 and 40071972106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40071972163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4633103 + ... + 4641743.

It is an arithmetic number, because the mean of its divisors is an integer number (2880482304).

Almost surely, 2^40071972143 is an apocalyptic number.

40071972143 is a deficient number, since it is larger than the sum of its proper divisors (6015744721).

40071972143 is a wasteful number, since it uses less digits than its factorization.

40071972143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12782.

The product of its (nonzero) digits is 42336, while the sum is 38.

The spelling of 40071972143 in words is "forty billion, seventy-one million, nine hundred seventy-two thousand, one hundred forty-three".