20489111586 has 48 divisors (see below), whose sum is σ = 49478364000. Its totient is φ = 6089641344.

The previous prime is 20489111563. The next prime is 20489111611. The reversal of 20489111586 is 68511198402.

It is a happy number.

20489111586 is a `hidden beast` number, since 2 + 0 + 489 + 11 + 158 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1756236 + ... + 1767863.

It is an arithmetic number, because the mean of its divisors is an integer number (1030799250).

Almost surely, 2^20489111586 is an apocalyptic number.

20489111586 is an abundant number, since it is smaller than the sum of its proper divisors (28989252414).

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

20489111586 is a wasteful number, since it uses less digits than its factorization.

20489111586 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3524143 (or 3524140 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 45.

The spelling of 20489111586 in words is "twenty billion, four hundred eighty-nine million, one hundred eleven thousand, five hundred eighty-six".