20015940345099 has 16 divisors (see below), whose sum is σ = 26926643011584. Its totient is φ = 13225114555200.

The previous prime is 20015940345061. The next prime is 20015940345127. The reversal of 20015940345099 is 99054304951002.

It is not a de Polignac number, because 20015940345099 - 2¹² = 20015940341003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20015940345199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64294594 + ... + 64605159.

It is an arithmetic number, because the mean of its divisors is an integer number (1682915188224).

Almost surely, 2^{20015940345099} is an apocalyptic number.

20015940345099 is a deficient number, since it is larger than the sum of its proper divisors (6910702666485).

20015940345099 is a wasteful number, since it uses less digits than its factorization.

20015940345099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128900218.

The product of its (nonzero) digits is 1749600, while the sum is 51.

The spelling of 20015940345099 in words is "twenty trillion, fifteen billion, nine hundred forty million, three hundred forty-five thousand, ninety-nine".