71889207551 has 32 divisors (see below), whose sum is σ = 83814912000. Its totient is φ = 60390899712.

The previous prime is 71889207541. The next prime is 71889207553. The reversal of 71889207551 is 15570298817.

It is a cyclic number.

It is not a de Polignac number, because 71889207551 - 2¹⁰ = 71889206527 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71889207493 and 71889207502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71889207553) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51020735 + ... + 51022143.

It is an arithmetic number, because the mean of its divisors is an integer number (2619216000).

Almost surely, 2^71889207551 is an apocalyptic number.

71889207551 is a deficient number, since it is larger than the sum of its proper divisors (11925704449).

71889207551 is a wasteful number, since it uses less digits than its factorization.

71889207551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2111.

The product of its (nonzero) digits is 1411200, while the sum is 53.

The spelling of 71889207551 in words is "seventy-one billion, eight hundred eighty-nine million, two hundred seven thousand, five hundred fifty-one".