20437013479 has 2 divisors, whose sum is σ = 20437013480. Its totient is φ = 20437013478.

The previous prime is 20437013477. The next prime is 20437013501. The reversal of 20437013479 is 97431073402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20437013479 - 2¹ = 20437013477 is a prime.

Together with 20437013477, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20437013477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10218506739 + 10218506740.

It is an arithmetic number, because the mean of its divisors is an integer number (10218506740).

Almost surely, 2^20437013479 is an apocalyptic number.

20437013479 is a deficient number, since it is larger than the sum of its proper divisors (1).

20437013479 is an equidigital number, since it uses as much as digits as its factorization.

20437013479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127008, while the sum is 40.

The spelling of 20437013479 in words is "twenty billion, four hundred thirty-seven million, thirteen thousand, four hundred seventy-nine".