20748880039 has 2 divisors, whose sum is σ = 20748880040. Its totient is φ = 20748880038.

The previous prime is 20748880021. The next prime is 20748880093. The reversal of 20748880039 is 93008884702.

Together with next prime (20748880093) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20748880039 - 2¹⁷ = 20748748967 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20748879974 and 20748880001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20748880939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10374440019 + 10374440020.

It is an arithmetic number, because the mean of its divisors is an integer number (10374440020).

Almost surely, 2^20748880039 is an apocalyptic number.

20748880039 is a deficient number, since it is larger than the sum of its proper divisors (1).

20748880039 is an equidigital number, since it uses as much as digits as its factorization.

20748880039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 774144, while the sum is 49.

The spelling of 20748880039 in words is "twenty billion, seven hundred forty-eight million, eight hundred eighty thousand, thirty-nine".