51470956818 has 32 divisors (see below), whose sum is σ = 114521037120. Its totient is φ = 17135815680.

The previous prime is 51470956793. The next prime is 51470956829. The reversal of 51470956818 is 81865907415.

It is a happy number.

51470956818 is a `hidden beast` number, since 5 + 1 + 4 + 70 + 9 + 568 + 1 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 543855 + ... + 631442.

It is an arithmetic number, because the mean of its divisors is an integer number (3578782410).

Almost surely, 2^51470956818 is an apocalyptic number.

51470956818 is an abundant number, since it is smaller than the sum of its proper divisors (63050080302).

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

51470956818 is a wasteful number, since it uses less digits than its factorization.

51470956818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1176119 (or 1176113 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 54.

The spelling of 51470956818 in words is "fifty-one billion, four hundred seventy million, nine hundred fifty-six thousand, eight hundred eighteen".