15552661607 has 8 divisors (see below), whose sum is σ = 18017956896. Its totient is φ = 13148237952.

The previous prime is 15552661561. The next prime is 15552661613. The reversal of 15552661607 is 70616625551.

15552661607 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 15552661607 - 2¹² = 15552657511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15552661207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15217358 + ... + 15218379.

It is an arithmetic number, because the mean of its divisors is an integer number (2252244612).

Almost surely, 2^15552661607 is an apocalyptic number.

15552661607 is a deficient number, since it is larger than the sum of its proper divisors (2465295289).

15552661607 is an equidigital number, since it uses as much as digits as its factorization.

15552661607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30435817.

The product of its (nonzero) digits is 378000, while the sum is 44.

The spelling of 15552661607 in words is "fifteen billion, five hundred fifty-two million, six hundred sixty-one thousand, six hundred seven".