20477621333 has 12 divisors (see below), whose sum is σ = 22178117700. Its totient is φ = 18898903296.

The previous prime is 20477621323. The next prime is 20477621341. The reversal of 20477621333 is 33312677402.

It can be written as a sum of positive squares in 6 ways, for example, as 2890352644 + 17587268689 = 53762^2 + 132617^2 .

It is not a de Polignac number, because 20477621333 - 2²⁰ = 20476572757 is a prime.

It is a super-3 number, since 3×20477621333³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20477621323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1488635 + ... + 1502327.

It is an arithmetic number, because the mean of its divisors is an integer number (1848176475).

Almost surely, 2^20477621333 is an apocalyptic number.

It is an amenable number.

20477621333 is a deficient number, since it is larger than the sum of its proper divisors (1700496367).

20477621333 is a wasteful number, since it uses less digits than its factorization.

20477621333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22568 (or 22555 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 38.

The spelling of 20477621333 in words is "twenty billion, four hundred seventy-seven million, six hundred twenty-one thousand, three hundred thirty-three".