71256001671761 has 8 divisors (see below), whose sum is σ = 74466575991744. Its totient is φ = 68054801292720.

The previous prime is 71256001671749. The next prime is 71256001671773. The reversal of 71256001671761 is 16717610065217.

It is an interprime number because it is at equal distance from previous prime (71256001671749) and next prime (71256001671773).

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 71256001671761 - 2³⁰ = 71254927929937 is a prime.

It is a super-2 number, since 2×71256001671761² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71256001671061) 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, 2343469691 + ... + 2343500096.

It is an arithmetic number, because the mean of its divisors is an integer number (9308321998968).

Almost surely, 2^{71256001671761} is an apocalyptic number.

It is an amenable number.

71256001671761 is a deficient number, since it is larger than the sum of its proper divisors (3210574319983).

71256001671761 is a wasteful number, since it uses less digits than its factorization.

71256001671761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4686970471.

The product of its (nonzero) digits is 740880, while the sum is 50.

The spelling of 71256001671761 in words is "seventy-one trillion, two hundred fifty-six billion, one million, six hundred seventy-one thousand, seven hundred sixty-one".