51323629528985 has 256 divisors, whose sum is σ = 72812025446400. Its totient is φ = 34390863360000.

The previous prime is 51323629528979. The next prime is 51323629529021. The reversal of 51323629528985 is 58982592632315.

It is not a de Polignac number, because 51323629528985 - 2¹⁸ = 51323629266841 is a prime.

It is a super-2 number, since 2×51323629528985² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 119080346720 + ... + 119080347150.

It is an arithmetic number, because the mean of its divisors is an integer number (284421974400).

Almost surely, 2^{51323629528985} is an apocalyptic number.

51323629528985 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51323629528985 is a deficient number, since it is larger than the sum of its proper divisors (21488395917415).

51323629528985 is a wasteful number, since it uses less digits than its factorization.

51323629528985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 904.

The product of its digits is 279936000, while the sum is 68.

The spelling of 51323629528985 in words is "fifty-one trillion, three hundred twenty-three billion, six hundred twenty-nine million, five hundred twenty-eight thousand, nine hundred eighty-five".