21733141990 has 32 divisors (see below), whose sum is σ = 45620596800. Its totient is φ = 7451361792.

The previous prime is 21733141967. The next prime is 21733142017. The reversal of 21733141990 is 9914133712.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3164667 + ... + 3171526.

It is an arithmetic number, because the mean of its divisors is an integer number (1425643650).

Almost surely, 2^21733141990 is an apocalyptic number.

21733141990 is an abundant number, since it is smaller than the sum of its proper divisors (23887454810).

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

21733141990 is an equidigital number, since it uses as much as digits as its factorization.

21733141990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6336221 (or 6336207 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 40.

The spelling of 21733141990 in words is "twenty-one billion, seven hundred thirty-three million, one hundred forty-one thousand, nine hundred ninety".