10001010991919 has 2 divisors, whose sum is σ = 10001010991920. Its totient is φ = 10001010991918.

The previous prime is 10001010991903. The next prime is 10001010991967. The reversal of 10001010991919 is 91919901010001.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (91919901010001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10001010991919 - 2⁴ = 10001010991903 is a prime.

It is a super-2 number, since 2×10001010991919² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10001010991999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000505495959 + 5000505495960.

It is an arithmetic number, because the mean of its divisors is an integer number (5000505495960).

Almost surely, 2^{10001010991919} is an apocalyptic number.

10001010991919 is a deficient number, since it is larger than the sum of its proper divisors (1).

10001010991919 is an equidigital number, since it uses as much as digits as its factorization.

10001010991919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6561, while the sum is 41.

The spelling of 10001010991919 in words is "ten trillion, one billion, ten million, nine hundred ninety-one thousand, nine hundred nineteen".