51642067271 has 16 divisors (see below), whose sum is σ = 55041638400. Its totient is φ = 48283628928.

The previous prime is 51642067261. The next prime is 51642067327. The reversal of 51642067271 is 17276024615.

It is a cyclic number.

It is not a de Polignac number, because 51642067271 - 2¹⁰ = 51642066247 is a prime.

It is a super-3 number, since 3×51642067271³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51642067261) 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, 1801670 + ... + 1830108.

It is an arithmetic number, because the mean of its divisors is an integer number (3440102400).

Almost surely, 2^51642067271 is an apocalyptic number.

51642067271 is a deficient number, since it is larger than the sum of its proper divisors (3399571129).

51642067271 is a wasteful number, since it uses less digits than its factorization.

51642067271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29158.

The product of its (nonzero) digits is 141120, while the sum is 41.

The spelling of 51642067271 in words is "fifty-one billion, six hundred forty-two million, sixty-seven thousand, two hundred seventy-one".