20933144976 has 40 divisors (see below), whose sum is σ = 54379421280. Its totient is φ = 6938730496.

The previous prime is 20933144959. The next prime is 20933145047. The reversal of 20933144976 is 67944133902.

It is a happy number.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1209585 + ... + 1226768.

It is an arithmetic number, because the mean of its divisors is an integer number (1359485532).

Almost surely, 2^20933144976 is an apocalyptic number.

It is an amenable number.

20933144976 is an abundant number, since it is smaller than the sum of its proper divisors (33446276304).

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

20933144976 is a wasteful number, since it uses less digits than its factorization.

20933144976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2436543 (or 2436537 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 48.

The spelling of 20933144976 in words is "twenty billion, nine hundred thirty-three million, one hundred forty-four thousand, nine hundred seventy-six".