51115351234 has 8 divisors (see below), whose sum is σ = 77116224060. Its totient is φ = 25409943216.

The previous prime is 51115351219. The next prime is 51115351237. The reversal of 51115351234 is 43215351115.

It can be written as a sum of positive squares in 2 ways, for example, as 51097246209 + 18105025 = 226047^2 + 4255^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×51115351234² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51115351196 and 51115351205.

It is not an unprimeable number, because it can be changed into a prime (51115351237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73865769 + ... + 73866460.

Almost surely, 2^51115351234 is an apocalyptic number.

51115351234 is a deficient number, since it is larger than the sum of its proper divisors (26000872826).

51115351234 is a wasteful number, since it uses less digits than its factorization.

51115351234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147732404.

The product of its digits is 9000, while the sum is 31.

The spelling of 51115351234 in words is "fifty-one billion, one hundred fifteen million, three hundred fifty-one thousand, two hundred thirty-four".