51227463881 has 8 divisors (see below), whose sum is σ = 55888164864. Its totient is φ = 46567372720.

The previous prime is 51227463877. The next prime is 51227463929. The reversal of 51227463881 is 18836472215.

51227463881 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 51227463881 - 2² = 51227463877 is a prime.

It is a super-2 number, since 2×51227463881² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51227463481) 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, 33011 + ... + 321783.

It is an arithmetic number, because the mean of its divisors is an integer number (6986020608).

Almost surely, 2^51227463881 is an apocalyptic number.

It is an amenable number.

51227463881 is a deficient number, since it is larger than the sum of its proper divisors (4660700983).

51227463881 is a wasteful number, since it uses less digits than its factorization.

51227463881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304911.

The product of its digits is 645120, while the sum is 47.

The spelling of 51227463881 in words is "fifty-one billion, two hundred twenty-seven million, four hundred sixty-three thousand, eight hundred eighty-one".