20480180134915 has 4 divisors (see below), whose sum is σ = 24576216161904. Its totient is φ = 16384144107928.

The previous prime is 20480180134861. The next prime is 20480180134919. The reversal of 20480180134915 is 51943108108402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20480180134915 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20480180134919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2048018013487 + ... + 2048018013496.

It is an arithmetic number, because the mean of its divisors is an integer number (6144054040476).

Almost surely, 2^{20480180134915} is an apocalyptic number.

20480180134915 is a deficient number, since it is larger than the sum of its proper divisors (4096036026989).

20480180134915 is an equidigital number, since it uses as much as digits as its factorization.

20480180134915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4096036026988.

The product of its (nonzero) digits is 276480, while the sum is 46.

The spelling of 20480180134915 in words is "twenty trillion, four hundred eighty billion, one hundred eighty million, one hundred thirty-four thousand, nine hundred fifteen".