51125323684 has 24 divisors (see below), whose sum is σ = 93726057600. Its totient is φ = 24368766240.

The previous prime is 51125323661. The next prime is 51125323699. The reversal of 51125323684 is 48632352115.

It is a super-2 number, since 2×51125323684² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2780302 + ... + 2798629.

It is an arithmetic number, because the mean of its divisors is an integer number (3905252400).

Almost surely, 2^51125323684 is an apocalyptic number.

It is an amenable number.

51125323684 is a deficient number, since it is larger than the sum of its proper divisors (42600733916).

51125323684 is a wasteful number, since it uses less digits than its factorization.

51125323684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5579043 (or 5579041 counting only the distinct ones).

The product of its digits is 172800, while the sum is 40.

Adding to 51125323684 its reverse (48632352115), we get a palindrome (99757675799).

The spelling of 51125323684 in words is "fifty-one billion, one hundred twenty-five million, three hundred twenty-three thousand, six hundred eighty-four".