51201406827 has 8 divisors (see below), whose sum is σ = 75853936080. Its totient is φ = 34134271200.

The previous prime is 51201406819. The next prime is 51201406843. The reversal of 51201406827 is 72860410215.

It is not a de Polignac number, because 51201406827 - 2³ = 51201406819 is a prime.

It is a super-2 number, since 2×51201406827² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51201406791 and 51201406800.

It is not an unprimeable number, because it can be changed into a prime (51201406807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 948174174 + ... + 948174227.

It is an arithmetic number, because the mean of its divisors is an integer number (9481742010).

Almost surely, 2^51201406827 is an apocalyptic number.

51201406827 is a deficient number, since it is larger than the sum of its proper divisors (24652529253).

51201406827 is a wasteful number, since it uses less digits than its factorization.

51201406827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1896348410 (or 1896348404 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The spelling of 51201406827 in words is "fifty-one billion, two hundred one million, four hundred six thousand, eight hundred twenty-seven".