71254171923 has 16 divisors (see below), whose sum is σ = 103975702272. Its totient is φ = 43045484000.

The previous prime is 71254171907. The next prime is 71254171973. The reversal of 71254171923 is 32917145217.

It is a cyclic number.

It is not a de Polignac number, because 71254171923 - 2⁴ = 71254171907 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (71254171903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3461148 + ... + 3481673.

It is an arithmetic number, because the mean of its divisors is an integer number (6498481392).

Almost surely, 2^71254171923 is an apocalyptic number.

71254171923 is a deficient number, since it is larger than the sum of its proper divisors (32721530349).

71254171923 is a wasteful number, since it uses less digits than its factorization.

71254171923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6943146.

The product of its digits is 105840, while the sum is 42.

The spelling of 71254171923 in words is "seventy-one billion, two hundred fifty-four million, one hundred seventy-one thousand, nine hundred twenty-three".