51748686808198 has 8 divisors (see below), whose sum is σ = 77696190470160. Its totient is φ = 25849956651480.

The previous prime is 51748686808081. The next prime is 51748686808237. The reversal of 51748686808198 is 89180868684715.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12193373658 + ... + 12193377901.

It is an arithmetic number, because the mean of its divisors is an integer number (9712023808770).

Almost surely, 2^{51748686808198} is an apocalyptic number.

51748686808198 is a deficient number, since it is larger than the sum of its proper divisors (25947503661962).

51748686808198 is a wasteful number, since it uses less digits than its factorization.

51748686808198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24386752622.

The product of its (nonzero) digits is 1486356480, while the sum is 79.

The spelling of 51748686808198 in words is "fifty-one trillion, seven hundred forty-eight billion, six hundred eighty-six million, eight hundred eight thousand, one hundred ninety-eight".