51801359682 has 8 divisors (see below), whose sum is σ = 103602719376. Its totient is φ = 17267119892.

The previous prime is 51801359681. The next prime is 51801359717. The reversal of 51801359682 is 28695310815.

It is a happy number.

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

51801359682 is an admirable number.

It is a super-2 number, since 2×51801359682² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51801359681) 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, 4316779968 + ... + 4316779979.

It is an arithmetic number, because the mean of its divisors is an integer number (12950339922).

Almost surely, 2^51801359682 is an apocalyptic number.

51801359682 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

51801359682 is a wasteful number, since it uses less digits than its factorization.

51801359682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8633559952.

The product of its (nonzero) digits is 518400, while the sum is 48.

The spelling of 51801359682 in words is "fifty-one billion, eight hundred one million, three hundred fifty-nine thousand, six hundred eighty-two".