71971471151 has 4 divisors (see below), whose sum is σ = 71973299904. Its totient is φ = 71969642400.

The previous prime is 71971471139. The next prime is 71971471157. The reversal of 71971471151 is 15117417917.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 71971471151 - 2¹⁰ = 71971470127 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 (71971471157) 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, 854015 + ... + 934496.

It is an arithmetic number, because the mean of its divisors is an integer number (17993324976).

Almost surely, 2^71971471151 is an apocalyptic number.

71971471151 is a deficient number, since it is larger than the sum of its proper divisors (1828753).

71971471151 is a wasteful number, since it uses less digits than its factorization.

71971471151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1828752.

The product of its digits is 61740, while the sum is 44.

The spelling of 71971471151 in words is "seventy-one billion, nine hundred seventy-one million, four hundred seventy-one thousand, one hundred fifty-one".