101989836019 has 2 divisors, whose sum is σ = 101989836020. Its totient is φ = 101989836018.

The previous prime is 101989835977. The next prime is 101989836043. The reversal of 101989836019 is 910638989101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101989836019 - 2²³ = 101981447411 is a prime.

It is a super-2 number, since 2×101989836019² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (101989836089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50994918009 + 50994918010.

It is an arithmetic number, because the mean of its divisors is an integer number (50994918010).

Almost surely, 2^101989836019 is an apocalyptic number.

101989836019 is a deficient number, since it is larger than the sum of its proper divisors (1).

101989836019 is an equidigital number, since it uses as much as digits as its factorization.

101989836019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 839808, while the sum is 55.

The spelling of 101989836019 in words is "one hundred one billion, nine hundred eighty-nine million, eight hundred thirty-six thousand, nineteen".