20028341479 has 2 divisors, whose sum is σ = 20028341480. Its totient is φ = 20028341478.

The previous prime is 20028341467. The next prime is 20028341513. The reversal of 20028341479 is 97414382002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20028341479 - 2¹⁷ = 20028210407 is a prime.

It is a super-2 number, since 2×20028341479² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20028342479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10014170739 + 10014170740.

It is an arithmetic number, because the mean of its divisors is an integer number (10014170740).

Almost surely, 2^20028341479 is an apocalyptic number.

20028341479 is a deficient number, since it is larger than the sum of its proper divisors (1).

20028341479 is an equidigital number, since it uses as much as digits as its factorization.

20028341479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 40.

The spelling of 20028341479 in words is "twenty billion, twenty-eight million, three hundred forty-one thousand, four hundred seventy-nine".