87153809489 has 2 divisors, whose sum is σ = 87153809490. Its totient is φ = 87153809488.

The previous prime is 87153809423. The next prime is 87153809521. The reversal of 87153809489 is 98490835178.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84778221889 + 2375587600 = 291167^2 + 48740^2 .

It is a cyclic number.

It is not a de Polignac number, because 87153809489 - 2²⁰ = 87152760913 is a prime.

It is a super-2 number, since 2×87153809489² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (87153809089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43576904744 + 43576904745.

It is an arithmetic number, because the mean of its divisors is an integer number (43576904745).

Almost surely, 2^87153809489 is an apocalyptic number.

It is an amenable number.

87153809489 is a deficient number, since it is larger than the sum of its proper divisors (1).

87153809489 is an equidigital number, since it uses as much as digits as its factorization.

87153809489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17418240, while the sum is 62.

The spelling of 87153809489 in words is "eighty-seven billion, one hundred fifty-three million, eight hundred nine thousand, four hundred eighty-nine".