71450836831 has 4 divisors (see below), whose sum is σ = 77946367464. Its totient is φ = 64955306200.

The previous prime is 71450836823. The next prime is 71450836889. The reversal of 71450836831 is 13863805417.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 71450836831 - 2³ = 71450836823 is a prime.

It is a super-2 number, since 2×71450836831² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71450836031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3247765300 + ... + 3247765321.

It is an arithmetic number, because the mean of its divisors is an integer number (19486591866).

Almost surely, 2^71450836831 is an apocalyptic number.

71450836831 is a deficient number, since it is larger than the sum of its proper divisors (6495530633).

71450836831 is a wasteful number, since it uses less digits than its factorization.

71450836831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6495530632.

The product of its (nonzero) digits is 483840, while the sum is 46.

The spelling of 71450836831 in words is "seventy-one billion, four hundred fifty million, eight hundred thirty-six thousand, eight hundred thirty-one".