20544449938 has 8 divisors (see below), whose sum is σ = 30824005680. Its totient is φ = 10269781380.

The previous prime is 20544449923. The next prime is 20544449953. The reversal of 20544449938 is 83994444502.

It is an interprime number because it is at equal distance from previous prime (20544449923) and next prime (20544449953).

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1211268 + ... + 1228111.

It is an arithmetic number, because the mean of its divisors is an integer number (3853000710).

Almost surely, 2^20544449938 is an apocalyptic number.

20544449938 is a deficient number, since it is larger than the sum of its proper divisors (10279555742).

20544449938 is a wasteful number, since it uses less digits than its factorization.

20544449938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2443592.

The product of its (nonzero) digits is 4976640, while the sum is 52.

The spelling of 20544449938 in words is "twenty billion, five hundred forty-four million, four hundred forty-nine thousand, nine hundred thirty-eight".