87879134897 has 2 divisors, whose sum is σ = 87879134898. Its totient is φ = 87879134896.

The previous prime is 87879134887. The next prime is 87879134899. The reversal of 87879134897 is 79843197878.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67612480576 + 20266654321 = 260024^2 + 142361^2 .

It is a cyclic number.

It is not a de Polignac number, because 87879134897 - 2⁴ = 87879134881 is a prime.

Together with 87879134899, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87879134897.

It is not a weakly prime, because it can be changed into another prime (87879134899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43939567448 + 43939567449.

It is an arithmetic number, because the mean of its divisors is an integer number (43939567449).

Almost surely, 2^87879134897 is an apocalyptic number.

It is an amenable number.

87879134897 is a deficient number, since it is larger than the sum of its proper divisors (1).

87879134897 is an equidigital number, since it uses as much as digits as its factorization.

87879134897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 170698752, while the sum is 71.

The spelling of 87879134897 in words is "eighty-seven billion, eight hundred seventy-nine million, one hundred thirty-four thousand, eight hundred ninety-seven".