20058978899 has 2 divisors, whose sum is σ = 20058978900. Its totient is φ = 20058978898.

The previous prime is 20058978893. The next prime is 20058978917. The reversal of 20058978899 is 99887985002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20058978899 - 2¹⁶ = 20058913363 is a prime.

It is not a weakly prime, because it can be changed into another prime (20058978893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10029489449 + 10029489450.

It is an arithmetic number, because the mean of its divisors is an integer number (10029489450).

Almost surely, 2^20058978899 is an apocalyptic number.

20058978899 is a deficient number, since it is larger than the sum of its proper divisors (1).

20058978899 is an equidigital number, since it uses as much as digits as its factorization.

20058978899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26127360, while the sum is 65.

The spelling of 20058978899 in words is "twenty billion, fifty-eight million, nine hundred seventy-eight thousand, eight hundred ninety-nine".