51128267203268 has 48 divisors (see below), whose sum is σ = 95046824718720. Its totient is φ = 23981925090816.

The previous prime is 51128267203261. The next prime is 51128267203337. The reversal of 51128267203268 is 86230276282115.

It is a happy number.

It is a super-2 number, since 2×51128267203268² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51128267203261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40798346 + ... + 42032862.

It is an arithmetic number, because the mean of its divisors is an integer number (1980142181640).

Almost surely, 2^{51128267203268} is an apocalyptic number.

It is an amenable number.

51128267203268 is a deficient number, since it is larger than the sum of its proper divisors (43918557515452).

51128267203268 is a wasteful number, since it uses less digits than its factorization.

51128267203268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1236524 (or 1236522 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 53.

The spelling of 51128267203268 in words is "fifty-one trillion, one hundred twenty-eight billion, two hundred sixty-seven million, two hundred three thousand, two hundred sixty-eight".