51120207166180 has 48 divisors (see below), whose sum is σ = 108966889632384. Its totient is φ = 20142788037120.

The previous prime is 51120207166123. The next prime is 51120207166181. The reversal of 51120207166180 is 8166170202115.

It is a super-2 number, since 2×51120207166180² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51120207166181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69016776 + ... + 69753535.

It is an arithmetic number, because the mean of its divisors is an integer number (2270143534008).

Almost surely, 2^{51120207166180} is an apocalyptic number.

It is an amenable number.

51120207166180 is an abundant number, since it is smaller than the sum of its proper divisors (57846682466204).

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

51120207166180 is a wasteful number, since it uses less digits than its factorization.

51120207166180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138770596 (or 138770594 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 40.

Adding to 51120207166180 its reverse (8166170202115), we get a palindrome (59286377368295).

The spelling of 51120207166180 in words is "fifty-one trillion, one hundred twenty billion, two hundred seven million, one hundred sixty-six thousand, one hundred eighty".