100050100510991 has 4 divisors (see below), whose sum is σ = 100050561781992. Its totient is φ = 100049639239992.

The previous prime is 100050100510963. The next prime is 100050100511029. The reversal of 100050100510991 is 199015001050001.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100050100510991 is a prime.

It is a super-2 number, since 2×100050100510991² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100050100510931) 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, 230309996 + ... + 230744001.

It is an arithmetic number, because the mean of its divisors is an integer number (25012640445498).

Almost surely, 2^{100050100510991} is an apocalyptic number.

100050100510991 is a deficient number, since it is larger than the sum of its proper divisors (461271001).

100050100510991 is an equidigital number, since it uses as much as digits as its factorization.

100050100510991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461271000.

The product of its (nonzero) digits is 2025, while the sum is 32.

Adding to 100050100510991 its reverse (199015001050001), we get a palindrome (299065101560992).

The spelling of 100050100510991 in words is "one hundred trillion, fifty billion, one hundred million, five hundred ten thousand, nine hundred ninety-one".