51107006172 has 12 divisors (see below), whose sum is σ = 119249681096. Its totient is φ = 17035668720.

The previous prime is 51107006147. The next prime is 51107006173. The reversal of 51107006172 is 27160070115.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×51107006172² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51107006173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2129458579 + ... + 2129458602.

Almost surely, 2^51107006172 is an apocalyptic number.

It is an amenable number.

51107006172 is an abundant number, since it is smaller than the sum of its proper divisors (68142674924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51107006172 is a wasteful number, since it uses less digits than its factorization.

51107006172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4258917188 (or 4258917186 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 30.

Adding to 51107006172 its reverse (27160070115), we get a palindrome (78267076287).

The spelling of 51107006172 in words is "fifty-one billion, one hundred seven million, six thousand, one hundred seventy-two".