15551006091 has 8 divisors (see below), whose sum is σ = 20850511680. Its totient is φ = 10309418952.

The previous prime is 15551006089. The next prime is 15551006111. The reversal of 15551006091 is 19060015551.

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

It is not a de Polignac number, because 15551006091 - 2¹ = 15551006089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15551006011) 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 7 ways as a sum of consecutive naturals, for example, 14478985 + ... + 14480058.

It is an arithmetic number, because the mean of its divisors is an integer number (2606313960).

Almost surely, 2^15551006091 is an apocalyptic number.

15551006091 is a deficient number, since it is larger than the sum of its proper divisors (5299505589).

15551006091 is a wasteful number, since it uses less digits than its factorization.

15551006091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28959225.

The product of its (nonzero) digits is 6750, while the sum is 33.

The spelling of 15551006091 in words is "fifteen billion, five hundred fifty-one million, six thousand, ninety-one".