51116166655650 has 72 divisors (see below), whose sum is σ = 140254060737024. Its totient is φ = 13340956965600.

The previous prime is 51116166655633. The next prime is 51116166655651. The reversal of 51116166655650 is 5655666161115.

It is a super-2 number, since 2×51116166655650² (a number of 28 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51116166655651) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1208398866 + ... + 1208441165.

It is an arithmetic number, because the mean of its divisors is an integer number (1947973065792).

Almost surely, 2^{51116166655650} is an apocalyptic number.

51116166655650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51116166655650 is an abundant number, since it is smaller than the sum of its proper divisors (89137894081374).

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

51116166655650 is a wasteful number, since it uses less digits than its factorization.

51116166655650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2416840096 (or 2416840088 counting only the distinct ones).

The product of its (nonzero) digits is 4860000, while the sum is 54.

The spelling of 51116166655650 in words is "fifty-one trillion, one hundred sixteen billion, one hundred sixty-six million, six hundred fifty-five thousand, six hundred fifty".