71721054176 has 12 divisors (see below), whose sum is σ = 141200825472. Its totient is φ = 35860527072.

The previous prime is 71721054131. The next prime is 71721054191. The reversal of 71721054176 is 67145012717.

It is a super-2 number, since 2×71721054176² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1120641440 + ... + 1120641503.

It is an arithmetic number, because the mean of its divisors is an integer number (11766735456).

Almost surely, 2^71721054176 is an apocalyptic number.

It is an amenable number.

71721054176 is a deficient number, since it is larger than the sum of its proper divisors (69479771296).

71721054176 is a wasteful number, since it uses less digits than its factorization.

71721054176 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2241282953 (or 2241282945 counting only the distinct ones).

The product of its (nonzero) digits is 82320, while the sum is 41.

The spelling of 71721054176 in words is "seventy-one billion, seven hundred twenty-one million, fifty-four thousand, one hundred seventy-six".