11481161515 has 8 divisors (see below), whose sum is σ = 13779684288. Its totient is φ = 9183402240.

The previous prime is 11481161491. The next prime is 11481161533. The reversal of 11481161515 is 51516118411.

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

It is not a de Polignac number, because 11481161515 - 2⁷ = 11481161387 is a prime.

It is a super-3 number, since 3×11481161515³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157251 + ... + 218380.

It is an arithmetic number, because the mean of its divisors is an integer number (1722460536).

Almost surely, 2^11481161515 is an apocalyptic number.

11481161515 is a deficient number, since it is larger than the sum of its proper divisors (2298522773).

11481161515 is an equidigital number, since it uses as much as digits as its factorization.

11481161515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381749.

The product of its digits is 4800, while the sum is 34.

Adding to 11481161515 its reverse (51516118411), we get a palindrome (62997279926).

The spelling of 11481161515 in words is "eleven billion, four hundred eighty-one million, one hundred sixty-one thousand, five hundred fifteen".