20116047587 has 4 divisors (see below), whose sum is σ = 20606682936. Its totient is φ = 19625412240.

The previous prime is 20116047569. The next prime is 20116047617. The reversal of 20116047587 is 78574061102.

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 20116047587 - 2⁸ = 20116047331 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 490635307 = 20116047587 / (2 + 0 + 1 + 1 + 6 + 0 + 4 + 7 + 5 + 8 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20116040587) 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, 245317613 + ... + 245317694.

It is an arithmetic number, because the mean of its divisors is an integer number (5151670734).

Almost surely, 2^20116047587 is an apocalyptic number.

20116047587 is a deficient number, since it is larger than the sum of its proper divisors (490635349).

20116047587 is an equidigital number, since it uses as much as digits as its factorization.

20116047587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490635348.

The product of its (nonzero) digits is 94080, while the sum is 41.

The spelling of 20116047587 in words is "twenty billion, one hundred sixteen million, forty-seven thousand, five hundred eighty-seven".