20933944545 has 64 divisors (see below), whose sum is σ = 36372384000. Its totient is φ = 10245159936.

The previous prime is 20933944531. The next prime is 20933944567. The reversal of 20933944545 is 54544933902.

20933944545 = T₁₁₀₄₆ + T₁₁₀₄₇ + ... + T₁₁₃₇₈.

It is not a de Polignac number, because 20933944545 - 2⁵ = 20933944513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20933944494 and 20933944503.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2410471 + ... + 2419139.

It is an arithmetic number, because the mean of its divisors is an integer number (568318500).

Almost surely, 2^20933944545 is an apocalyptic number.

It is an amenable number.

20933944545 is a deficient number, since it is larger than the sum of its proper divisors (15438439455).

20933944545 is a wasteful number, since it uses less digits than its factorization.

20933944545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8962.

The product of its (nonzero) digits is 2332800, while the sum is 48.

The spelling of 20933944545 in words is "twenty billion, nine hundred thirty-three million, nine hundred forty-four thousand, five hundred forty-five".