51115506665167 has 8 divisors (see below), whose sum is σ = 58486206929696. Its totient is φ = 43761927657312.

The previous prime is 51115506665147. The next prime is 51115506665221. The reversal of 51115506665167 is 76156660551115.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51115506665167 is a prime.

It is a super-2 number, since 2×51115506665167² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51115506665137) 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, 4280307768 + ... + 4280319709.

It is an arithmetic number, because the mean of its divisors is an integer number (7310775866212).

Almost surely, 2^{51115506665167} is an apocalyptic number.

51115506665167 is a deficient number, since it is larger than the sum of its proper divisors (7370700264529).

51115506665167 is an equidigital number, since it uses as much as digits as its factorization.

51115506665167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8560628337.

The product of its (nonzero) digits is 5670000, while the sum is 55.

The spelling of 51115506665167 in words is "fifty-one trillion, one hundred fifteen billion, five hundred six million, six hundred sixty-five thousand, one hundred sixty-seven".