51463886986 has 8 divisors (see below), whose sum is σ = 77198401440. Its totient is φ = 25731086508.

The previous prime is 51463886941. The next prime is 51463886987. The reversal of 51463886986 is 68968836415.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (51463886987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 350596 + ... + 475231.

It is an arithmetic number, because the mean of its divisors is an integer number (9649800180).

Almost surely, 2^51463886986 is an apocalyptic number.

51463886986 is a deficient number, since it is larger than the sum of its proper divisors (25734514454).

51463886986 is a wasteful number, since it uses less digits than its factorization.

51463886986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856988.

The product of its digits is 59719680, while the sum is 64.

The spelling of 51463886986 in words is "fifty-one billion, four hundred sixty-three million, eight hundred eighty-six thousand, nine hundred eighty-six".