71504899216 has 15 divisors (see below), whose sum is σ = 138542814643. Its totient is φ = 35751914800.

The previous prime is 71504899159. The next prime is 71504899217. The reversal of 71504899216 is 61299840517.

The square root of 71504899216 is 267404.

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

It is a super-2 number, since 2×71504899216² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71504899217) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1036191 + ... + 1103041.

Almost surely, 2^71504899216 is an apocalyptic number.

71504899216 is the 267404-th square number.

It is an amenable number.

71504899216 is a deficient number, since it is larger than the sum of its proper divisors (67037915427).

71504899216 is an frugal number, since it uses more digits than its factorization.

71504899216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133710 (or 66853 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 52.

The spelling of 71504899216 in words is "seventy-one billion, five hundred four million, eight hundred ninety-nine thousand, two hundred sixteen".