20151445545015 has 16 divisors (see below), whose sum is σ = 33644152562688. Its totient is φ = 10280157727136.

The previous prime is 20151445544981. The next prime is 20151445545073. The reversal of 20151445545015 is 51054554415102.

It is a cyclic number.

It is not a de Polignac number, because 20151445545015 - 2⁷ = 20151445544887 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29204993199 + ... + 29204993888.

It is an arithmetic number, because the mean of its divisors is an integer number (2102759535168).

Almost surely, 2^{20151445545015} is an apocalyptic number.

20151445545015 is a deficient number, since it is larger than the sum of its proper divisors (13492707017673).

20151445545015 is a wasteful number, since it uses less digits than its factorization.

20151445545015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58409987118.

The product of its (nonzero) digits is 400000, while the sum is 42.

The spelling of 20151445545015 in words is "twenty trillion, one hundred fifty-one billion, four hundred forty-five million, five hundred forty-five thousand, fifteen".