20587482911 has 4 divisors (see below), whose sum is σ = 20661806232. Its totient is φ = 20513159592.

The previous prime is 20587482857. The next prime is 20587482913. The reversal of 20587482911 is 11928478502.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20587482911 - 2⁶ = 20587482847 is a prime.

It is a super-2 number, since 2×20587482911² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20587482913) 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, 37161245 + ... + 37161798.

It is an arithmetic number, because the mean of its divisors is an integer number (5165451558).

Almost surely, 2^20587482911 is an apocalyptic number.

20587482911 is a deficient number, since it is larger than the sum of its proper divisors (74323321).

20587482911 is an equidigital number, since it uses as much as digits as its factorization.

20587482911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74323320.

The product of its (nonzero) digits is 322560, while the sum is 47.

The spelling of 20587482911 in words is "twenty billion, five hundred eighty-seven million, four hundred eighty-two thousand, nine hundred eleven".