51166515616095 has 64 divisors (see below), whose sum is σ = 91794307645440. Its totient is φ = 24118645017600.

The previous prime is 51166515616093. The next prime is 51166515616121. The reversal of 51166515616095 is 59061651566115.

It is a happy number.

It is not a de Polignac number, because 51166515616095 - 2¹ = 51166515616093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51166515616093) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4531875 + ... + 11084715.

It is an arithmetic number, because the mean of its divisors is an integer number (1434286056960).

Almost surely, 2^{51166515616095} is an apocalyptic number.

51166515616095 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51166515616095 is a deficient number, since it is larger than the sum of its proper divisors (40627792029345).

51166515616095 is a wasteful number, since it uses less digits than its factorization.

51166515616095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6554176.

The product of its (nonzero) digits is 7290000, while the sum is 57.

The spelling of 51166515616095 in words is "fifty-one trillion, one hundred sixty-six billion, five hundred fifteen million, six hundred sixteen thousand, ninety-five".