51001120104 has 64 divisors (see below), whose sum is σ = 139124321280. Its totient is φ = 15451512000.

The previous prime is 51001120099. The next prime is 51001120129. The reversal of 51001120104 is 40102110015.

It is a happy number.

It is a super-2 number, since 2×51001120104² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1362519 + ... + 1399449.

It is an arithmetic number, because the mean of its divisors is an integer number (2173817520).

Almost surely, 2^51001120104 is an apocalyptic number.

It is an amenable number.

51001120104 is an abundant number, since it is smaller than the sum of its proper divisors (88123201176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51001120104 is a wasteful number, since it uses less digits than its factorization.

51001120104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42182 (or 42178 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 15.

Adding to 51001120104 its reverse (40102110015), we get a palindrome (91103230119).

The spelling of 51001120104 in words is "fifty-one billion, one million, one hundred twenty thousand, one hundred four".