20004545015 has 32 divisors (see below), whose sum is σ = 30045980160. Its totient is φ = 12447586944.

The previous prime is 20004545003. The next prime is 20004545039. The reversal of 20004545015 is 51054540002.

It is not a de Polignac number, because 20004545015 - 2⁶ = 20004544951 is a prime.

It is a super-2 number, since 2×20004545015² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 345749 + ... + 399438.

It is an arithmetic number, because the mean of its divisors is an integer number (938936880).

Almost surely, 2^20004545015 is an apocalyptic number.

20004545015 is a deficient number, since it is larger than the sum of its proper divisors (10041435145).

20004545015 is a wasteful number, since it uses less digits than its factorization.

20004545015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745271.

The product of its (nonzero) digits is 4000, while the sum is 26.

The spelling of 20004545015 in words is "twenty billion, four million, five hundred forty-five thousand, fifteen".