20940474933 has 24 divisors (see below), whose sum is σ = 35041950528. Its totient is φ = 11802065472.

The previous prime is 20940474923. The next prime is 20940474943. The reversal of 20940474933 is 33947404902.

20940474933 is a `hidden beast` number, since 2 + 0 + 94 + 0 + 474 + 93 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (20940474923) and next prime (20940474943).

It is not a de Polignac number, because 20940474933 - 2⁴ = 20940474917 is a prime.

It is a super-4 number, since 4×20940474933⁴ (a number of 42 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20940474923) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2272035 + ... + 2281232.

It is an arithmetic number, because the mean of its divisors is an integer number (1460081272).

Almost surely, 2^20940474933 is an apocalyptic number.

It is an amenable number.

20940474933 is a deficient number, since it is larger than the sum of its proper divisors (14101475595).

20940474933 is a wasteful number, since it uses less digits than its factorization.

20940474933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4553353 (or 4553350 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 45.

The spelling of 20940474933 in words is "twenty billion, nine hundred forty million, four hundred seventy-four thousand, nine hundred thirty-three".