20533513230 has 32 divisors (see below), whose sum is σ = 54756036000. Its totient is φ = 5475603456.

The previous prime is 20533513213. The next prime is 20533513241. The reversal of 20533513230 is 3231533502.

20533513230 is a `hidden beast` number, since 2 + 0 + 5 + 335 + 1 + 323 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 20533513194 and 20533513203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38024755 + ... + 38025294.

It is an arithmetic number, because the mean of its divisors is an integer number (1711126125).

Almost surely, 2^20533513230 is an apocalyptic number.

20533513230 is an abundant number, since it is smaller than the sum of its proper divisors (34222522770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20533513230 is a wasteful number, since it uses less digits than its factorization.

20533513230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76050065 (or 76050059 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 27.

The spelling of 20533513230 in words is "twenty billion, five hundred thirty-three million, five hundred thirteen thousand, two hundred thirty".