22018503688550 has 24 divisors (see below), whose sum is σ = 41148513642792. Its totient is φ = 8765660232000.

The previous prime is 22018503688499. The next prime is 22018503688583. The reversal of 22018503688550 is 5588630581022.

It is a super-2 number, since 2×22018503688550² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22018503688492 and 22018503688501.

It is a congruent number.

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, 1043520431 + ... + 1043541530.

It is an arithmetic number, because the mean of its divisors is an integer number (1714521401783).

Almost surely, 2^{22018503688550} is an apocalyptic number.

22018503688550 is a deficient number, since it is larger than the sum of its proper divisors (19130009954242).

22018503688550 is a wasteful number, since it uses less digits than its factorization.

22018503688550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2087062184 (or 2087062179 counting only the distinct ones).

The product of its (nonzero) digits is 4608000, while the sum is 53.

The spelling of 22018503688550 in words is "twenty-two trillion, eighteen billion, five hundred three million, six hundred eighty-eight thousand, five hundred fifty".