56121138551650 has 48 divisors (see below), whose sum is σ = 106249050250560. Its totient is φ = 22050003483200.

The previous prime is 56121138551629. The next prime is 56121138551657. The reversal of 56121138551650 is 5615583112165.

It is a junction number, because it is equal to n+sod(n) for n = 56121138551594 and 56121138551603.

It is not an unprimeable number, because it can be changed into a prime (56121138551657) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28429384 + ... + 30339283.

It is an arithmetic number, because the mean of its divisors is an integer number (2213521880220).

Almost surely, 2^{56121138551650} is an apocalyptic number.

56121138551650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

56121138551650 is a deficient number, since it is larger than the sum of its proper divisors (50127911698910).

56121138551650 is a wasteful number, since it uses less digits than its factorization.

56121138551650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58769019 (or 58769014 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 49.

The spelling of 56121138551650 in words is "fifty-six trillion, one hundred twenty-one billion, one hundred thirty-eight million, five hundred fifty-one thousand, six hundred fifty".