87513887513 has 8 divisors (see below), whose sum is σ = 98343365568. Its totient is φ = 77269786704.

The previous prime is 87513887509. The next prime is 87513887537. The reversal of 87513887513 is 31578831578.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87513887513 - 2² = 87513887509 is a prime.

It is a super-3 number, since 3×87513887513³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87513847513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146343995 + ... + 146344592.

It is an arithmetic number, because the mean of its divisors is an integer number (12292920696).

Almost surely, 2^87513887513 is an apocalyptic number.

It is an amenable number.

87513887513 is a deficient number, since it is larger than the sum of its proper divisors (10829478055).

87513887513 is a wasteful number, since it uses less digits than its factorization.

87513887513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292688623.

The product of its digits is 5644800, while the sum is 56.

The spelling of 87513887513 in words is "eighty-seven billion, five hundred thirteen million, eight hundred eighty-seven thousand, five hundred thirteen".