16552117587 has 8 divisors (see below), whose sum is σ = 22781409280. Its totient is φ = 10678785480.

The previous prime is 16552117559. The next prime is 16552117591. The reversal of 16552117587 is 78571125561.

It is a happy number.

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

It is not a de Polignac number, because 16552117587 - 2¹⁸ = 16551855443 is a prime.

It is a super-2 number, since 2×16552117587² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16552117597) 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, 88989787 + ... + 88989972.

It is an arithmetic number, because the mean of its divisors is an integer number (2847676160).

Almost surely, 2^16552117587 is an apocalyptic number.

16552117587 is a deficient number, since it is larger than the sum of its proper divisors (6229291693).

16552117587 is a wasteful number, since it uses less digits than its factorization.

16552117587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177979793.

The product of its digits is 588000, while the sum is 48.

The spelling of 16552117587 in words is "sixteen billion, five hundred fifty-two million, one hundred seventeen thousand, five hundred eighty-seven".