71983131240942 has 24 divisors (see below), whose sum is σ = 156195194660544. Its totient is φ = 23958724212864.

The previous prime is 71983131240941. The next prime is 71983131240961. The reversal of 71983131240942 is 24904213138917.

71983131240942 is a `hidden beast` number, since 7 + 198 + 3 + 1 + 3 + 1 + 2 + 409 + 42 = 666.

71983131240942 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71983131240941) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2971059838 + ... + 2971084065.

It is an arithmetic number, because the mean of its divisors is an integer number (6508133110856).

Almost surely, 2^{71983131240942} is an apocalyptic number.

71983131240942 is an abundant number, since it is smaller than the sum of its proper divisors (84212063419602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71983131240942 is a wasteful number, since it uses less digits than its factorization.

71983131240942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5942144584 (or 5942144581 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The spelling of 71983131240942 in words is "seventy-one trillion, nine hundred eighty-three billion, one hundred thirty-one million, two hundred forty thousand, nine hundred forty-two".