20535567790 has 8 divisors (see below), whose sum is σ = 36964022040. Its totient is φ = 8214227112.

The previous prime is 20535567769. The next prime is 20535567791. The reversal of 20535567790 is 9776553502.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20535567791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1026778380 + ... + 1026778399.

It is an arithmetic number, because the mean of its divisors is an integer number (4620502755).

Almost surely, 2^20535567790 is an apocalyptic number.

20535567790 is a deficient number, since it is larger than the sum of its proper divisors (16428454250).

20535567790 is a wasteful number, since it uses less digits than its factorization.

20535567790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2053556786.

The product of its (nonzero) digits is 1984500, while the sum is 49.

The spelling of 20535567790 in words is "twenty billion, five hundred thirty-five million, five hundred sixty-seven thousand, seven hundred ninety".