20587677243 has 8 divisors (see below), whose sum is σ = 31371698688. Its totient is φ = 11764386984.

The previous prime is 20587677239. The next prime is 20587677247. The reversal of 20587677243 is 34277678502.

It is an interprime number because it is at equal distance from previous prime (20587677239) and next prime (20587677247).

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

It is not a de Polignac number, because 20587677243 - 2² = 20587677239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20587677247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 490182771 + ... + 490182812.

It is an arithmetic number, because the mean of its divisors is an integer number (3921462336).

Almost surely, 2^20587677243 is an apocalyptic number.

20587677243 is a deficient number, since it is larger than the sum of its proper divisors (10784021445).

20587677243 is an equidigital number, since it uses as much as digits as its factorization.

20587677243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980365593.

The product of its (nonzero) digits is 3951360, while the sum is 51.

The spelling of 20587677243 in words is "twenty billion, five hundred eighty-seven million, six hundred seventy-seven thousand, two hundred forty-three".