50851865123400 has 192 divisors, whose sum is σ = 173744669004480. Its totient is φ = 12200634777600.

The previous prime is 50851865123383. The next prime is 50851865123413. The reversal of 50851865123400 is 432156815805.

It is a self number, because there is not a number n which added to its sum of digits gives 50851865123400.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 39075409 + ... + 40355808.

It is an arithmetic number, because the mean of its divisors is an integer number (904920151065).

Almost surely, 2^{50851865123400} is an apocalyptic number.

50851865123400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

50851865123400 is an abundant number, since it is smaller than the sum of its proper divisors (122892803881080).

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

50851865123400 is a wasteful number, since it uses less digits than its factorization.

50851865123400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79431344 (or 79431335 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 48.

The spelling of 50851865123400 in words is "fifty trillion, eight hundred fifty-one billion, eight hundred sixty-five million, one hundred twenty-three thousand, four hundred".