99887119261 has 2 divisors, whose sum is σ = 99887119262. Its totient is φ = 99887119260.

The previous prime is 99887119243. The next prime is 99887119403. The reversal of 99887119261 is 16291178899.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89682280900 + 10204838361 = 299470^2 + 101019^2 .

It is a cyclic number.

It is not a de Polignac number, because 99887119261 - 2¹⁵ = 99887086493 is a prime.

It is a super-2 number, since 2×99887119261² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 99887119261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99887129261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49943559630 + 49943559631.

It is an arithmetic number, because the mean of its divisors is an integer number (49943559631).

Almost surely, 2^99887119261 is an apocalyptic number.

It is an amenable number.

99887119261 is a deficient number, since it is larger than the sum of its proper divisors (1).

99887119261 is an equidigital number, since it uses as much as digits as its factorization.

99887119261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3919104, while the sum is 61.

The spelling of 99887119261 in words is "ninety-nine billion, eight hundred eighty-seven million, one hundred nineteen thousand, two hundred sixty-one".