71893153281 has 4 divisors (see below), whose sum is σ = 95857537712. Its totient is φ = 47928768852.

The previous prime is 71893153261. The next prime is 71893153327. The reversal of 71893153281 is 18235139817.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 71893153281 - 2¹⁰ = 71893152257 is a prime.

It is a super-2 number, since 2×71893153281² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 71893153281.

It is not an unprimeable number, because it can be changed into a prime (71893153261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11982192211 + ... + 11982192216.

It is an arithmetic number, because the mean of its divisors is an integer number (23964384428).

Almost surely, 2^71893153281 is an apocalyptic number.

It is an amenable number.

71893153281 is a deficient number, since it is larger than the sum of its proper divisors (23964384431).

71893153281 is a wasteful number, since it uses less digits than its factorization.

71893153281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23964384430.

The product of its digits is 362880, while the sum is 48.

The spelling of 71893153281 in words is "seventy-one billion, eight hundred ninety-three million, one hundred fifty-three thousand, two hundred eighty-one".