51411874821 has 8 divisors (see below), whose sum is σ = 68610982560. Its totient is φ = 34243675152.

The previous prime is 51411874799. The next prime is 51411874837. The reversal of 51411874821 is 12847811415.

51411874821 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 not a de Polignac number, because 51411874821 - 2¹³ = 51411866629 is a prime.

It is a super-2 number, since 2×51411874821² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51411874841) 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, 7723135 + ... + 7729788.

It is an arithmetic number, because the mean of its divisors is an integer number (8576372820).

Almost surely, 2^51411874821 is an apocalyptic number.

It is an amenable number.

51411874821 is a deficient number, since it is larger than the sum of its proper divisors (17199107739).

51411874821 is a wasteful number, since it uses less digits than its factorization.

51411874821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15454035.

The product of its digits is 71680, while the sum is 42.

The spelling of 51411874821 in words is "fifty-one billion, four hundred eleven million, eight hundred seventy-four thousand, eight hundred twenty-one".