21612523764050 has 48 divisors (see below), whose sum is σ = 41055887826432. Its totient is φ = 8460807379200.

The previous prime is 21612523764023. The next prime is 21612523764059. The reversal of 21612523764050 is 5046732521612.

It is a junction number, because it is equal to n+sod(n) for n = 21612523763992 and 21612523764010.

It is not an unprimeable number, because it can be changed into a prime (21612523764059) 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, 85491335 + ... + 85743765.

It is an arithmetic number, because the mean of its divisors is an integer number (855330996384).

Almost surely, 2^{21612523764050} is an apocalyptic number.

21612523764050 is a deficient number, since it is larger than the sum of its proper divisors (19443364062382).

21612523764050 is a wasteful number, since it uses less digits than its factorization.

21612523764050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288923 (or 288918 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 44.

The spelling of 21612523764050 in words is "twenty-one trillion, six hundred twelve billion, five hundred twenty-three million, seven hundred sixty-four thousand, fifty".