15116436440 has 32 divisors (see below), whose sum is σ = 38870837280. Its totient is φ = 5182778112.

The previous prime is 15116436409. The next prime is 15116436509. The reversal of 15116436440 is 4463461151.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 15116436440.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26993357 + ... + 26993916.

It is an arithmetic number, because the mean of its divisors is an integer number (1214713665).

Almost surely, 2^15116436440 is an apocalyptic number.

15116436440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15116436440 is an abundant number, since it is smaller than the sum of its proper divisors (23754400840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15116436440 is a wasteful number, since it uses less digits than its factorization.

15116436440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53987291 (or 53987287 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

Adding to 15116436440 its reverse (4463461151), we get a palindrome (19579897591).

The spelling of 15116436440 in words is "fifteen billion, one hundred sixteen million, four hundred thirty-six thousand, four hundred forty".