87515540469 has 24 divisors (see below), whose sum is σ = 144480011520. Its totient is φ = 50005448928.

The previous prime is 87515540459. The next prime is 87515540471. The reversal of 87515540469 is 96404551578.

It is a happy number.

87515540469 is a `hidden beast` number, since 8 + 7 + 51 + 5 + 540 + 46 + 9 = 666.

It is not a de Polignac number, because 87515540469 - 2⁷ = 87515540341 is a prime.

It is a super-2 number, since 2×87515540469² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87515540459) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1092612 + ... + 1169970.

It is an arithmetic number, because the mean of its divisors is an integer number (6020000480).

Almost surely, 2^87515540469 is an apocalyptic number.

It is an amenable number.

87515540469 is a deficient number, since it is larger than the sum of its proper divisors (56964471051).

87515540469 is a wasteful number, since it uses less digits than its factorization.

87515540469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95329 (or 95326 counting only the distinct ones).

The product of its (nonzero) digits is 6048000, while the sum is 54.

The spelling of 87515540469 in words is "eighty-seven billion, five hundred fifteen million, five hundred forty thousand, four hundred sixty-nine".