87265886450 has 18 divisors (see below), whose sum is σ = 162318434151. Its totient is φ = 34905519040.

The previous prime is 87265886447. The next prime is 87265886459. The reversal of 87265886450 is 5468856278.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 22139356849 + 65126529601 = 148793^2 + 255199^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=208885.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 87265886450.

It is not an unprimeable number, because it can be changed into a prime (87265886459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2067962 + ... + 2109738.

Almost surely, 2^87265886450 is an apocalyptic number.

87265886450 is a deficient number, since it is larger than the sum of its proper divisors (75052547701).

87265886450 is an frugal number, since it uses more digits than its factorization.

87265886450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83566 (or 41784 counting only the distinct ones).

The product of its (nonzero) digits is 25804800, while the sum is 59.

The spelling of 87265886450 in words is "eighty-seven billion, two hundred sixty-five million, eight hundred eighty-six thousand, four hundred fifty".