51920963198 has 8 divisors (see below), whose sum is σ = 83872325208. Its totient is φ = 23963521464.

The previous prime is 51920963197. The next prime is 51920963231. The reversal of 51920963198 is 89136902915.

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 not an unprimeable number, because it can be changed into a prime (51920963197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 998480036 + ... + 998480087.

It is an arithmetic number, because the mean of its divisors is an integer number (10484040651).

Almost surely, 2^51920963198 is an apocalyptic number.

51920963198 is a deficient number, since it is larger than the sum of its proper divisors (31951362010).

51920963198 is a wasteful number, since it uses less digits than its factorization.

51920963198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1996960138.

The product of its (nonzero) digits is 1049760, while the sum is 53.

The spelling of 51920963198 in words is "fifty-one billion, nine hundred twenty million, nine hundred sixty-three thousand, one hundred ninety-eight".