20498862620 has 24 divisors (see below), whose sum is σ = 43052589888. Its totient is φ = 8198596800.

The previous prime is 20498862617. The next prime is 20498862647. The reversal of 20498862620 is 2626889402.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133250 + ... + 242390.

It is an arithmetic number, because the mean of its divisors is an integer number (1793857912).

Almost surely, 2^20498862620 is an apocalyptic number.

20498862620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20498862620 is an abundant number, since it is smaller than the sum of its proper divisors (22553727268).

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

20498862620 is a wasteful number, since it uses less digits than its factorization.

20498862620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118541 (or 118539 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 47.

The spelling of 20498862620 in words is "twenty billion, four hundred ninety-eight million, eight hundred sixty-two thousand, six hundred twenty".