51561051158 has 8 divisors (see below), whose sum is σ = 77358689928. Its totient is φ = 25774821184.

The previous prime is 51561051131. The next prime is 51561051163. The reversal of 51561051158 is 85115016515.

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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2840891 + ... + 2858982.

It is an arithmetic number, because the mean of its divisors is an integer number (9669836241).

Almost surely, 2^51561051158 is an apocalyptic number.

51561051158 is a deficient number, since it is larger than the sum of its proper divisors (25797638770).

51561051158 is a wasteful number, since it uses less digits than its factorization.

51561051158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5704398.

The product of its (nonzero) digits is 30000, while the sum is 38.

The spelling of 51561051158 in words is "fifty-one billion, five hundred sixty-one million, fifty-one thousand, one hundred fifty-eight".