71543076243940 has 24 divisors (see below), whose sum is σ = 171703382985792. Its totient is φ = 24529054712160.

The previous prime is 71543076243937. The next prime is 71543076243979. The reversal of 71543076243940 is 4934267034517.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255510986446 + ... + 255510986725.

It is an arithmetic number, because the mean of its divisors is an integer number (7154307624408).

Almost surely, 2^{71543076243940} is an apocalyptic number.

71543076243940 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

71543076243940 is an abundant number, since it is smaller than the sum of its proper divisors (100160306741852).

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

71543076243940 is a wasteful number, since it uses less digits than its factorization.

71543076243940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511021973187 (or 511021973185 counting only the distinct ones).

The product of its (nonzero) digits is 15240960, while the sum is 55.

The spelling of 71543076243940 in words is "seventy-one trillion, five hundred forty-three billion, seventy-six million, two hundred forty-three thousand, nine hundred forty".