21442059996 has 48 divisors (see below), whose sum is σ = 57191339520. Its totient is φ = 6124962240.

The previous prime is 21442059953. The next prime is 21442060027. The reversal of 21442059996 is 69995024412.

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, 396345 + ... + 447183.

It is an arithmetic number, because the mean of its divisors is an integer number (1191486240).

Almost surely, 2^21442059996 is an apocalyptic number.

It is an amenable number.

21442059996 is an abundant number, since it is smaller than the sum of its proper divisors (35749279524).

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

21442059996 is a wasteful number, since it uses less digits than its factorization.

21442059996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55874 (or 55872 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 51.

The spelling of 21442059996 in words is "twenty-one billion, four hundred forty-two million, fifty-nine thousand, nine hundred ninety-six".