51609848486 has 24 divisors (see below), whose sum is σ = 90701813160. Its totient is φ = 21959374752.

The previous prime is 51609848483. The next prime is 51609848491. The reversal of 51609848486 is 68484890615.

It is a hoax number, since the sum of its digits (59) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51609848483) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1880735 + ... + 1907978.

It is an arithmetic number, because the mean of its divisors is an integer number (3779242215).

Almost surely, 2^51609848486 is an apocalyptic number.

51609848486 is a deficient number, since it is larger than the sum of its proper divisors (39091964674).

51609848486 is a wasteful number, since it uses less digits than its factorization.

51609848486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3788868 (or 3788861 counting only the distinct ones).

The product of its (nonzero) digits is 13271040, while the sum is 59.

The spelling of 51609848486 in words is "fifty-one billion, six hundred nine million, eight hundred forty-eight thousand, four hundred eighty-six".