51911267998 has 8 divisors (see below), whose sum is σ = 77876719200. Its totient is φ = 25952361600.

The previous prime is 51911267963. The next prime is 51911268001. The reversal of 51911267998 is 89976211915.

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1616323 + ... + 1648126.

It is an arithmetic number, because the mean of its divisors is an integer number (9734589900).

Almost surely, 2^51911267998 is an apocalyptic number.

51911267998 is a deficient number, since it is larger than the sum of its proper divisors (25965451202).

51911267998 is a wasteful number, since it uses less digits than its factorization.

51911267998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3272402.

The product of its digits is 2449440, while the sum is 58.

The spelling of 51911267998 in words is "fifty-one billion, nine hundred eleven million, two hundred sixty-seven thousand, nine hundred ninety-eight".