887874397719109 has 2 divisors, whose sum is σ = 887874397719110. Its totient is φ = 887874397719108.

The previous prime is 887874397719053. The next prime is 887874397719161. The reversal of 887874397719109 is 901917793478788.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 857255273482084 + 30619124237025 = 29278922^2 + 5533455^2 .

It is a cyclic number.

It is not a de Polignac number, because 887874397719109 - 2⁷ = 887874397718981 is a prime.

It is a super-2 number, since 2×887874397719109² (a number of 31 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 887874397719109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (887874397719409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 443937198859554 + 443937198859555.

It is an arithmetic number, because the mean of its divisors is an integer number (443937198859555).

Almost surely, 2^{887874397719109} is an apocalyptic number.

It is an amenable number.

887874397719109 is a deficient number, since it is larger than the sum of its proper divisors (1).

887874397719109 is an equidigital number, since it uses as much as digits as its factorization.

887874397719109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10754021376, while the sum is 88.

The spelling of 887874397719109 in words is "eight hundred eighty-seven trillion, eight hundred seventy-four billion, three hundred ninety-seven million, seven hundred nineteen thousand, one hundred nine".