115621440001 has 16 divisors (see below), whose sum is σ = 120174243840. Its totient is φ = 111120834240.

The previous prime is 115621439987. The next prime is 115621440017. The reversal of 115621440001 is 100044126511.

It is a de Polignac number, because none of the positive numbers 2^k-115621440001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115621440071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11466480 + ... + 11476558.

It is an arithmetic number, because the mean of its divisors is an integer number (7510890240).

Almost surely, 2^115621440001 is an apocalyptic number.

It is an amenable number.

115621440001 is a deficient number, since it is larger than the sum of its proper divisors (4552803839).

115621440001 is a wasteful number, since it uses less digits than its factorization.

115621440001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12624.

The product of its (nonzero) digits is 960, while the sum is 25.

Adding to 115621440001 its reverse (100044126511), we get a palindrome (215665566512).

The spelling of 115621440001 in words is "one hundred fifteen billion, six hundred twenty-one million, four hundred forty thousand, one".