20797854448 has 30 divisors (see below), whose sum is σ = 46055771736. Its totient is φ = 8912712096.

The previous prime is 20797854431. The next prime is 20797854457. The reversal of 20797854448 is 84445879702.

It is a junction number, because it is equal to n+sod(n) for n = 20797854392 and 20797854401.

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 5 ways as a sum of consecutive naturals, for example, 1519411 + ... + 1533037.

Almost surely, 2^20797854448 is an apocalyptic number.

20797854448 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20797854448 is an abundant number, since it is smaller than the sum of its proper divisors (25257917288).

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

20797854448 is an frugal number, since it uses more digits than its factorization.

20797854448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27269 (or 13636 counting only the distinct ones).

The product of its (nonzero) digits is 18063360, while the sum is 58.

The spelling of 20797854448 in words is "twenty billion, seven hundred ninety-seven million, eight hundred fifty-four thousand, four hundred forty-eight".