20424534773515 has 16 divisors (see below), whose sum is σ = 25359710690880. Its totient is φ = 15773009212800.

The previous prime is 20424534773431. The next prime is 20424534773519. The reversal of 20424534773515 is 51537743542402.

It is not a de Polignac number, because 20424534773515 - 2⁹ = 20424534773003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20424534773519) by changing a digit.

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, 13489311 + ... + 14926840.

It is an arithmetic number, because the mean of its divisors is an integer number (1584981918180).

Almost surely, 2^{20424534773515} is an apocalyptic number.

20424534773515 is a deficient number, since it is larger than the sum of its proper divisors (4935175917365).

20424534773515 is a wasteful number, since it uses less digits than its factorization.

20424534773515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28421142.

The product of its (nonzero) digits is 14112000, while the sum is 52.

The spelling of 20424534773515 in words is "twenty trillion, four hundred twenty-four billion, five hundred thirty-four million, seven hundred seventy-three thousand, five hundred fifteen".