71721054163 has 8 divisors (see below), whose sum is σ = 82843570800. Its totient is φ = 61365607680.

The previous prime is 71721054131. The next prime is 71721054191. The reversal of 71721054163 is 36145012717.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71721054163 - 2⁵ = 71721054131 is a prime.

It is a super-2 number, since 2×71721054163² (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 (71721054263) 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, 191767338 + ... + 191767711.

It is an arithmetic number, because the mean of its divisors is an integer number (10355446350).

Almost surely, 2^71721054163 is an apocalyptic number.

71721054163 is a deficient number, since it is larger than the sum of its proper divisors (11122516637).

71721054163 is a wasteful number, since it uses less digits than its factorization.

71721054163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383535077.

The product of its (nonzero) digits is 35280, while the sum is 37.

The spelling of 71721054163 in words is "seventy-one billion, seven hundred twenty-one million, fifty-four thousand, one hundred sixty-three".