51303025881 has 12 divisors (see below), whose sum is σ = 74106347952. Its totient is φ = 34201104696.

The previous prime is 51303025831. The next prime is 51303025909. The reversal of 51303025881 is 18852030315.

It is not a de Polignac number, because 51303025881 - 2⁹ = 51303025369 is a prime.

It is a super-2 number, since 2×51303025881² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51303025811) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 559950 + ... + 645096.

It is an arithmetic number, because the mean of its divisors is an integer number (6175528996).

Almost surely, 2^51303025881 is an apocalyptic number.

It is an amenable number.

51303025881 is a deficient number, since it is larger than the sum of its proper divisors (22803322071).

51303025881 is a wasteful number, since it uses less digits than its factorization.

51303025881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152100 (or 152097 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The spelling of 51303025881 in words is "fifty-one billion, three hundred three million, twenty-five thousand, eight hundred eighty-one".