87809337667 has 2 divisors, whose sum is σ = 87809337668. Its totient is φ = 87809337666.

The previous prime is 87809337593. The next prime is 87809337673. The reversal of 87809337667 is 76673390878.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87809337667 - 2¹⁵ = 87809304899 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87809337599 and 87809337608.

It is not a weakly prime, because it can be changed into another prime (87809337677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43904668833 + 43904668834.

It is an arithmetic number, because the mean of its divisors is an integer number (43904668834).

Almost surely, 2^87809337667 is an apocalyptic number.

87809337667 is a deficient number, since it is larger than the sum of its proper divisors (1).

87809337667 is an equidigital number, since it uses as much as digits as its factorization.

87809337667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64012032, while the sum is 64.

The spelling of 87809337667 in words is "eighty-seven billion, eight hundred nine million, three hundred thirty-seven thousand, six hundred sixty-seven".