51015161106009 has 12 divisors (see below), whose sum is σ = 73690831227156. Its totient is φ = 34009061933952.

The previous prime is 51015161105983. The next prime is 51015161106043. The reversal of 51015161106009 is 90060116151015.

It is a happy number.

51015161106009 is a `hidden beast` number, since 5 + 10 + 15 + 16 + 1 + 10 + 600 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5240193987609 + 45774967118400 = 2289147^2 + 6765720^2 .

It is not a de Polignac number, because 51015161106009 - 2²³ = 51015152717401 is a prime.

It is a super-2 number, since 2×51015161106009² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51015162106009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86813404 + ... + 87399069.

It is an arithmetic number, because the mean of its divisors is an integer number (6140902602263).

Almost surely, 2^{51015161106009} is an apocalyptic number.

It is an amenable number.

51015161106009 is a deficient number, since it is larger than the sum of its proper divisors (22675670121147).

51015161106009 is a wasteful number, since it uses less digits than its factorization.

51015161106009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174245016 (or 174245013 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 36.

The spelling of 51015161106009 in words is "fifty-one trillion, fifteen billion, one hundred sixty-one million, one hundred six thousand, nine".