20798255426 has 16 divisors (see below), whose sum is σ = 33600365568. Its totient is φ = 9598285200.

The previous prime is 20798255411. The next prime is 20798255449. The reversal of 20798255426 is 62455289702.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 297881 + ... + 361011.

It is an arithmetic number, because the mean of its divisors is an integer number (2100022848).

Almost surely, 2^20798255426 is an apocalyptic number.

20798255426 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20798255426 is a deficient number, since it is larger than the sum of its proper divisors (12802110142).

20798255426 is a wasteful number, since it uses less digits than its factorization.

20798255426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75817.

The product of its (nonzero) digits is 2419200, while the sum is 50.

The spelling of 20798255426 in words is "twenty billion, seven hundred ninety-eight million, two hundred fifty-five thousand, four hundred twenty-six".