20103139879 has 2 divisors, whose sum is σ = 20103139880. Its totient is φ = 20103139878.

The previous prime is 20103139817. The next prime is 20103139891. The reversal of 20103139879 is 97893130102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20103139879 - 2⁷ = 20103139751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20103139079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10051569939 + 10051569940.

It is an arithmetic number, because the mean of its divisors is an integer number (10051569940).

Almost surely, 2^20103139879 is an apocalyptic number.

20103139879 is a deficient number, since it is larger than the sum of its proper divisors (1).

20103139879 is an equidigital number, since it uses as much as digits as its factorization.

20103139879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 43.

The spelling of 20103139879 in words is "twenty billion, one hundred three million, one hundred thirty-nine thousand, eight hundred seventy-nine".