15551227115 has 8 divisors (see below), whose sum is σ = 18708012288. Its totient is φ = 12409955200.

The previous prime is 15551227091. The next prime is 15551227117. The reversal of 15551227115 is 51172215551.

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

It is not a de Polignac number, because 15551227115 - 2¹² = 15551223019 is a prime.

It is a super-2 number, since 2×15551227115² (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 (15551227117) 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, 3876107 + ... + 3880116.

It is an arithmetic number, because the mean of its divisors is an integer number (2338501536).

Almost surely, 2^15551227115 is an apocalyptic number.

15551227115 is a deficient number, since it is larger than the sum of its proper divisors (3156785173).

15551227115 is an equidigital number, since it uses as much as digits as its factorization.

15551227115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7756629.

The product of its digits is 17500, while the sum is 35.

The spelling of 15551227115 in words is "fifteen billion, five hundred fifty-one million, two hundred twenty-seven thousand, one hundred fifteen".