71719121461 has 8 divisors (see below), whose sum is σ = 77238076160. Its totient is φ = 66200466672.

The previous prime is 71719121443. The next prime is 71719121471. The reversal of 71719121461 is 16412191717.

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 71719121461 - 2⁵ = 71719121429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71719121471) 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, 799600 + ... + 884758.

It is an arithmetic number, because the mean of its divisors is an integer number (9654759520).

Almost surely, 2^71719121461 is an apocalyptic number.

It is an amenable number.

71719121461 is a deficient number, since it is larger than the sum of its proper divisors (5518954699).

71719121461 is a wasteful number, since it uses less digits than its factorization.

71719121461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149955.

The product of its digits is 21168, while the sum is 40.

The spelling of 71719121461 in words is "seventy-one billion, seven hundred nineteen million, one hundred twenty-one thousand, four hundred sixty-one".