21373606024550 has 48 divisors (see below), whose sum is σ = 42865898906880. Its totient is φ = 7882037802240.

The previous prime is 21373606024499. The next prime is 21373606024601. The reversal of 21373606024550 is 5542060637312.

It is an interprime number because it is at equal distance from previous prime (21373606024499) and next prime (21373606024601).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19797062 + ... + 20848761.

It is an arithmetic number, because the mean of its divisors is an integer number (893039560560).

Almost surely, 2^{21373606024550} is an apocalyptic number.

21373606024550 is an abundant number, since it is smaller than the sum of its proper divisors (21492292882330).

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

21373606024550 is a wasteful number, since it uses less digits than its factorization.

21373606024550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40646657 (or 40646652 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 44.

The spelling of 21373606024550 in words is "twenty-one trillion, three hundred seventy-three billion, six hundred six million, twenty-four thousand, five hundred fifty".