21603206484740 has 24 divisors (see below), whose sum is σ = 46830176639232. Its totient is φ = 8362531542240.

The previous prime is 21603206484689. The next prime is 21603206484773. The reversal of 21603206484740 is 4748460230612.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17421940094 + ... + 17421941333.

It is an arithmetic number, because the mean of its divisors is an integer number (1951257359968).

Almost surely, 2^{21603206484740} is an apocalyptic number.

21603206484740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21603206484740 is an abundant number, since it is smaller than the sum of its proper divisors (25226970154492).

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

21603206484740 is a wasteful number, since it uses less digits than its factorization.

21603206484740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34843881467 (or 34843881465 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 47.

The spelling of 21603206484740 in words is "twenty-one trillion, six hundred three billion, two hundred six million, four hundred eighty-four thousand, seven hundred forty".