51121352104 has 16 divisors (see below), whose sum is σ = 95856721920. Its totient is φ = 25559559600.

The previous prime is 51121352081. The next prime is 51121352111. The reversal of 51121352104 is 40125312115.

It is a super-2 number, since 2×51121352104² (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 3 ways as a sum of consecutive naturals, for example, 74329 + ... + 328279.

It is an arithmetic number, because the mean of its divisors is an integer number (5991045120).

Almost surely, 2^51121352104 is an apocalyptic number.

It is an amenable number.

51121352104 is a deficient number, since it is larger than the sum of its proper divisors (44735369816).

51121352104 is a wasteful number, since it uses less digits than its factorization.

51121352104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279120 (or 279116 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 51121352104 its reverse (40125312115), we get a palindrome (91246664219).

It can be divided in two parts, 51121 and 352104, that added together give a square (403225 = 635²).

The spelling of 51121352104 in words is "fifty-one billion, one hundred twenty-one million, three hundred fifty-two thousand, one hundred four".