87318351045 has 24 divisors (see below), whose sum is σ = 151480056312. Its totient is φ = 46530326400.

The previous prime is 87318351019. The next prime is 87318351077. The reversal of 87318351045 is 54015381378.

It is a happy number.

87318351045 is a `hidden beast` number, since 87 + 3 + 18 + 3 + 510 + 45 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 43251104961 + 44067246084 = 207969^2 + 209922^2 .

It is not a de Polignac number, because 87318351045 - 2⁶ = 87318350981 is a prime.

It is a super-3 number, since 3×87318351045³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 768366 + ... + 874655.

It is an arithmetic number, because the mean of its divisors is an integer number (6311669013).

Almost surely, 2^87318351045 is an apocalyptic number.

It is an amenable number.

87318351045 is a deficient number, since it is larger than the sum of its proper divisors (64161705267).

87318351045 is a wasteful number, since it uses less digits than its factorization.

87318351045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1644213 (or 1644210 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The spelling of 87318351045 in words is "eighty-seven billion, three hundred eighteen million, three hundred fifty-one thousand, forty-five".