11315439915 has 32 divisors (see below), whose sum is σ = 19817023296. Its totient is φ = 5479349760.

The previous prime is 11315439913. The next prime is 11315439917. The reversal of 11315439915 is 51993451311.

It is an interprime number because it is at equal distance from previous prime (11315439913) and next prime (11315439917).

It is not a de Polignac number, because 11315439915 - 2¹ = 11315439913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11315439913) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 463744 + ... + 487533.

It is an arithmetic number, because the mean of its divisors is an integer number (619281978).

Almost surely, 2^11315439915 is an apocalyptic number.

11315439915 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11315439915 is a deficient number, since it is larger than the sum of its proper divisors (8501583381).

11315439915 is a wasteful number, since it uses less digits than its factorization.

11315439915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 951359.

The product of its digits is 72900, while the sum is 42.

The spelling of 11315439915 in words is "eleven billion, three hundred fifteen million, four hundred thirty-nine thousand, nine hundred fifteen".