20348520492 has 18 divisors (see below), whose sum is σ = 47481034188. Its totient is φ = 6782675448.

The previous prime is 20348520473. The next prime is 20348520529. The reversal of 20348520492 is 29402584302.

It is a self number, because there is not a number n which added to its sum of digits gives 20348520492.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 473559 + ... + 514737.

Almost surely, 2^20348520492 is an apocalyptic number.

It is an amenable number.

20348520492 is an abundant number, since it is smaller than the sum of its proper divisors (27132513696).

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

20348520492 is an frugal number, since it uses more digits than its factorization.

20348520492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82365 (or 41184 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

The spelling of 20348520492 in words is "twenty billion, three hundred forty-eight million, five hundred twenty thousand, four hundred ninety-two".