51166153727 has 8 divisors (see below), whose sum is σ = 55103789664. Its totient is φ = 47228771808.

The previous prime is 51166153669. The next prime is 51166153739. The reversal of 51166153727 is 72735166115.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51166153727 - 2⁸ = 51166153471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51166153757) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 661358 + ... + 734660.

It is an arithmetic number, because the mean of its divisors is an integer number (6887973708).

Almost surely, 2^51166153727 is an apocalyptic number.

51166153727 is a deficient number, since it is larger than the sum of its proper divisors (3937635937).

51166153727 is a wasteful number, since it uses less digits than its factorization.

51166153727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127009.

The product of its digits is 264600, while the sum is 44.

The spelling of 51166153727 in words is "fifty-one billion, one hundred sixty-six million, one hundred fifty-three thousand, seven hundred twenty-seven".