20502540033 has 8 divisors (see below), whose sum is σ = 27385800768. Its totient is φ = 13643819664.

The previous prime is 20502539987. The next prime is 20502540043. The reversal of 20502540033 is 33004520502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20502540033 - 2¹⁸ = 20502277889 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20502539985 and 20502540012.

It is not an unprimeable number, because it can be changed into a prime (20502540043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6133141 + ... + 6136482.

It is an arithmetic number, because the mean of its divisors is an integer number (3423225096).

Almost surely, 2^20502540033 is an apocalyptic number.

It is an amenable number.

20502540033 is a deficient number, since it is larger than the sum of its proper divisors (6883260735).

20502540033 is a wasteful number, since it uses less digits than its factorization.

20502540033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12270183.

The product of its (nonzero) digits is 3600, while the sum is 24.

The spelling of 20502540033 in words is "twenty billion, five hundred two million, five hundred forty thousand, thirty-three".