71215327044 has 81 divisors (see below), whose sum is σ = 182648474463. Its totient is φ = 23396325264.

The previous prime is 71215326983. The next prime is 71215327063. The reversal of 71215327044 is 44072351217.

The square root of 71215327044 is 266862.

It is a perfect power (a square), and thus also a powerful number.

71215327044 is a `hidden beast` number, since 7 + 12 + 1 + 532 + 70 + 44 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 126492307 + ... + 126492869.

Almost surely, 2^71215327044 is an apocalyptic number.

71215327044 is the 266862-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71215327044

71215327044 is an abundant number, since it is smaller than the sum of its proper divisors (111433147419).

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

71215327044 is an equidigital number, since it uses as much as digits as its factorization.

71215327044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1294 (or 647 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

Multiplying 71215327044 by its sum of digits (36), we get a square (2563751773584 = 1601172²).

71215327044 divided by its sum of digits (36) gives a square (1978203529 = 44477²).

The spelling of 71215327044 in words is "seventy-one billion, two hundred fifteen million, three hundred twenty-seven thousand, forty-four".