100581399211819 has 4 divisors (see below), whose sum is σ = 100944508956544. Its totient is φ = 100218289467096.

The previous prime is 100581399211771. The next prime is 100581399211859. The reversal of 100581399211819 is 918112993185001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100581399211819 - 2⁴³ = 91785306189611 is a prime.

It is a super-2 number, since 2×100581399211819² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100581399211859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181554871947 + ... + 181554872500.

It is an arithmetic number, because the mean of its divisors is an integer number (25236127239136).

Almost surely, 2^{100581399211819} is an apocalyptic number.

100581399211819 is a deficient number, since it is larger than the sum of its proper divisors (363109744725).

100581399211819 is an equidigital number, since it uses as much as digits as its factorization.

100581399211819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363109744724.

The product of its (nonzero) digits is 1399680, while the sum is 58.

The spelling of 100581399211819 in words is "one hundred trillion, five hundred eighty-one billion, three hundred ninety-nine million, two hundred eleven thousand, eight hundred nineteen".