20677819833 has 192 divisors, whose sum is σ = 37153177600. Its totient is φ = 11316412800.

The previous prime is 20677819823. The next prime is 20677819837. The reversal of 20677819833 is 33891877602.

It is not a de Polignac number, because 20677819833 - 2⁴ = 20677819817 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20677819833.

It is not an unprimeable number, because it can be changed into a prime (20677819837) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 162817416 + ... + 162817542.

Almost surely, 2^20677819833 is an apocalyptic number.

It is an amenable number.

20677819833 is a deficient number, since it is larger than the sum of its proper divisors (16475357767).

20677819833 is a wasteful number, since it uses less digits than its factorization.

20677819833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281 (or 264 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 54.

The spelling of 20677819833 in words is "twenty billion, six hundred seventy-seven million, eight hundred nineteen thousand, eight hundred thirty-three".