71071744551 has 16 divisors (see below), whose sum is σ = 98006277120. Its totient is φ = 45765034560.

The previous prime is 71071744529. The next prime is 71071744553. The reversal of 71071744551 is 15544717017.

It is not a de Polignac number, because 71071744551 - 2⁶ = 71071744487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71071744553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 681966 + ... + 779243.

It is an arithmetic number, because the mean of its divisors is an integer number (6125392320).

Almost surely, 2^71071744551 is an apocalyptic number.

71071744551 is a deficient number, since it is larger than the sum of its proper divisors (26934532569).

71071744551 is a wasteful number, since it uses less digits than its factorization.

71071744551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1461766.

The product of its (nonzero) digits is 137200, while the sum is 42.

The spelling of 71071744551 in words is "seventy-one billion, seventy-one million, seven hundred forty-four thousand, five hundred fifty-one".