71119225721 has 4 divisors (see below), whose sum is σ = 71133211392. Its totient is φ = 71105240052.

The previous prime is 71119225711. The next prime is 71119225733. The reversal of 71119225721 is 12752291117.

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 a cyclic number.

It is not a de Polignac number, because 71119225721 - 2²⁶ = 71052116857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71119225711) 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, 6985205 + ... + 6995378.

It is an arithmetic number, because the mean of its divisors is an integer number (17783302848).

Almost surely, 2^71119225721 is an apocalyptic number.

It is an amenable number.

71119225721 is a deficient number, since it is larger than the sum of its proper divisors (13985671).

71119225721 is a wasteful number, since it uses less digits than its factorization.

71119225721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13985670.

The product of its digits is 17640, while the sum is 38.

The spelling of 71119225721 in words is "seventy-one billion, one hundred nineteen million, two hundred twenty-five thousand, seven hundred twenty-one".