71642946244 has 9 divisors (see below), whose sum is σ = 125376092751. Its totient is φ = 35821205460.

The previous prime is 71642946227. The next prime is 71642946257. The reversal of 71642946244 is 44264924617.

The square root of 71642946244 is 267662.

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

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 468409 + ... + 602239.

Almost surely, 2^71642946244 is an apocalyptic number.

71642946244 is the 267662-nd square number.

It is an amenable number.

71642946244 is a deficient number, since it is larger than the sum of its proper divisors (53733146507).

71642946244 is an frugal number, since it uses more digits than its factorization.

71642946244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267666 (or 133833 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 49.

Multiplying 71642946244 by its sum of digits (49), we get a square (3510504365956 = 1873634²).

The spelling of 71642946244 in words is "seventy-one billion, six hundred forty-two million, nine hundred forty-six thousand, two hundred forty-four".