20235580487 has 4 divisors (see below), whose sum is σ = 20240758416. Its totient is φ = 20230402560.

The previous prime is 20235580457. The next prime is 20235580489. The reversal of 20235580487 is 78408553202.

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 20235580487 - 2¹⁴ = 20235564103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20235580489) 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, 2583098 + ... + 2590919.

It is an arithmetic number, because the mean of its divisors is an integer number (5060189604).

Almost surely, 2^20235580487 is an apocalyptic number.

20235580487 is a deficient number, since it is larger than the sum of its proper divisors (5177929).

20235580487 is an equidigital number, since it uses as much as digits as its factorization.

20235580487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5177928.

The product of its (nonzero) digits is 537600, while the sum is 44.

The spelling of 20235580487 in words is "twenty billion, two hundred thirty-five million, five hundred eighty thousand, four hundred eighty-seven".