71827231522840 has 32 divisors (see below), whose sum is σ = 162194705142480. Its totient is φ = 28627170970752.

The previous prime is 71827231522831. The next prime is 71827231522841. The reversal of 71827231522840 is 4822513272817.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71827231522841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3241289982 + ... + 3241312141.

Almost surely, 2^{71827231522840} is an apocalyptic number.

It is an amenable number.

71827231522840 is an abundant number, since it is smaller than the sum of its proper divisors (90367473619640).

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

71827231522840 is a wasteful number, since it uses less digits than its factorization.

71827231522840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6482602411 (or 6482602407 counting only the distinct ones).

The product of its (nonzero) digits is 3010560, while the sum is 52.

The spelling of 71827231522840 in words is "seventy-one trillion, eight hundred twenty-seven billion, two hundred thirty-one million, five hundred twenty-two thousand, eight hundred forty".