51651665061000 has 128 divisors (see below), whose sum is σ = 162329496975360. Its totient is φ = 13673238720000.

The previous prime is 51651665060969. The next prime is 51651665061071. The reversal of 51651665061000 is 16056615615.

51651665061000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62425576 + ... + 63247575.

It is an arithmetic number, because the mean of its divisors is an integer number (1268199195120).

Almost surely, 2^{51651665061000} is an apocalyptic number.

51651665061000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51651665061000 is an abundant number, since it is smaller than the sum of its proper divisors (110677831914360).

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

51651665061000 is a wasteful number, since it uses less digits than its factorization.

51651665061000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125673312 (or 125673298 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 42.

The spelling of 51651665061000 in words is "fifty-one trillion, six hundred fifty-one billion, six hundred sixty-five million, sixty-one thousand".