20993049312 has 48 divisors (see below), whose sum is σ = 55136132352. Its totient is φ = 6993952640.

The previous prime is 20993049293. The next prime is 20993049353. The reversal of 20993049312 is 21394039902.

It is a tau number, because it is divible by the number of its divisors (48).

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125737 + ... + 240407.

It is an arithmetic number, because the mean of its divisors is an integer number (1148669424).

Almost surely, 2^20993049312 is an apocalyptic number.

It is an amenable number.

20993049312 is an abundant number, since it is smaller than the sum of its proper divisors (34143083040).

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

20993049312 is a wasteful number, since it uses less digits than its factorization.

20993049312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116591 (or 116583 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 42.

The spelling of 20993049312 in words is "twenty billion, nine hundred ninety-three million, forty-nine thousand, three hundred twelve".