87613447541 has 4 divisors (see below), whose sum is σ = 87733961952. Its totient is φ = 87492933132.

The previous prime is 87613447511. The next prime is 87613447543. The reversal of 87613447541 is 14574431678.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87613447541 - 2³⁰ = 86539705717 is a prime.

It is a super-2 number, since 2×87613447541² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87613447541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87613447543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60256115 + ... + 60257568.

It is an arithmetic number, because the mean of its divisors is an integer number (21933490488).

Almost surely, 2^87613447541 is an apocalyptic number.

It is an amenable number.

87613447541 is a deficient number, since it is larger than the sum of its proper divisors (120514411).

87613447541 is a wasteful number, since it uses less digits than its factorization.

87613447541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120514410.

The product of its digits is 2257920, while the sum is 50.

The spelling of 87613447541 in words is "eighty-seven billion, six hundred thirteen million, four hundred forty-seven thousand, five hundred forty-one".