71845826085 has 48 divisors (see below), whose sum is σ = 135982723968. Its totient is φ = 34801315200.

The previous prime is 71845826069. The next prime is 71845826093. The reversal of 71845826085 is 58062854817.

It is not a de Polignac number, because 71845826085 - 2⁴ = 71845826069 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 457915 + ... + 594455.

It is an arithmetic number, because the mean of its divisors is an integer number (2832973416).

Almost surely, 2^71845826085 is an apocalyptic number.

It is an amenable number.

71845826085 is a deficient number, since it is larger than the sum of its proper divisors (64136897883).

71845826085 is a wasteful number, since it uses less digits than its factorization.

71845826085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137626 (or 137623 counting only the distinct ones).

The product of its (nonzero) digits is 4300800, while the sum is 54.

The spelling of 71845826085 in words is "seventy-one billion, eight hundred forty-five million, eight hundred twenty-six thousand, eighty-five".