51882447661 has 8 divisors (see below), whose sum is σ = 56638825344. Its totient is φ = 47132701920.

The previous prime is 51882447623. The next prime is 51882447677. The reversal of 51882447661 is 16674428815.

51882447661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 51882447661 - 2¹¹ = 51882445613 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51882447599 and 51882447608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51882447761) 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, 1641616 + ... + 1672921.

It is an arithmetic number, because the mean of its divisors is an integer number (7079853168).

Almost surely, 2^51882447661 is an apocalyptic number.

It is an amenable number.

51882447661 is a deficient number, since it is larger than the sum of its proper divisors (4756377683).

51882447661 is a wasteful number, since it uses less digits than its factorization.

51882447661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3315971.

The product of its digits is 2580480, while the sum is 52.

The spelling of 51882447661 in words is "fifty-one billion, eight hundred eighty-two million, four hundred forty-seven thousand, six hundred sixty-one".