51194198061 has 24 divisors (see below), whose sum is σ = 74882851680. Its totient is φ = 33698107296.

The previous prime is 51194198059. The next prime is 51194198087. The reversal of 51194198061 is 16089149115.

51194198061 is a `hidden beast` number, since 511 + 9 + 41 + 98 + 0 + 6 + 1 = 666.

It is not a de Polignac number, because 51194198061 - 2¹ = 51194198059 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51194197998 and 51194198016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51194198051) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1285395 + ... + 1324623.

It is an arithmetic number, because the mean of its divisors is an integer number (3120118820).

Almost surely, 2^51194198061 is an apocalyptic number.

It is an amenable number.

51194198061 is a deficient number, since it is larger than the sum of its proper divisors (23688653619).

51194198061 is a wasteful number, since it uses less digits than its factorization.

51194198061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41065 (or 41062 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 45.

The spelling of 51194198061 in words is "fifty-one billion, one hundred ninety-four million, one hundred ninety-eight thousand, sixty-one".