51115166650 has 24 divisors (see below), whose sum is σ = 99207873504. Its totient is φ = 19557106800.

The previous prime is 51115166603. The next prime is 51115166717. The reversal of 51115166650 is 5666151115.

It is a super-2 number, since 2×51115166650² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22222836 + ... + 22225135.

It is an arithmetic number, because the mean of its divisors is an integer number (4133661396).

Almost surely, 2^51115166650 is an apocalyptic number.

51115166650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51115166650 is a deficient number, since it is larger than the sum of its proper divisors (48092706854).

51115166650 is a wasteful number, since it uses less digits than its factorization.

51115166650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44448006 (or 44448001 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 37.

The spelling of 51115166650 in words is "fifty-one billion, one hundred fifteen million, one hundred sixty-six thousand, six hundred fifty".