87208611901 has 2 divisors, whose sum is σ = 87208611902. Its totient is φ = 87208611900.

The previous prime is 87208611839. The next prime is 87208611911. The reversal of 87208611901 is 10911680278.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69431723001 + 17776888900 = 263499^2 + 133330^2 .

It is a cyclic number.

It is not a de Polignac number, because 87208611901 - 2³⁵ = 52848873533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87208611911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43604305950 + 43604305951.

It is an arithmetic number, because the mean of its divisors is an integer number (43604305951).

Almost surely, 2^87208611901 is an apocalyptic number.

It is an amenable number.

87208611901 is a deficient number, since it is larger than the sum of its proper divisors (1).

87208611901 is an equidigital number, since it uses as much as digits as its factorization.

87208611901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 43.

The spelling of 87208611901 in words is "eighty-seven billion, two hundred eight million, six hundred eleven thousand, nine hundred one".