51123051510 has 64 divisors (see below), whose sum is σ = 128088000000. Its totient is φ = 13034165760.

The previous prime is 51123051467. The next prime is 51123051523. The reversal of 51123051510 is 1515032115.

It is a super-2 number, since 2×51123051510² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1620366 + ... + 1651614.

It is an arithmetic number, because the mean of its divisors is an integer number (2001375000).

Almost surely, 2^51123051510 is an apocalyptic number.

51123051510 is an abundant number, since it is smaller than the sum of its proper divisors (76964948490).

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

51123051510 is a wasteful number, since it uses less digits than its factorization.

51123051510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33653.

The product of its (nonzero) digits is 750, while the sum is 24.

Adding to 51123051510 its reverse (1515032115), we get a palindrome (52638083625).

The spelling of 51123051510 in words is "fifty-one billion, one hundred twenty-three million, fifty-one thousand, five hundred ten".