20465540045 has 16 divisors (see below), whose sum is σ = 25102576512. Its totient is φ = 16011802560.

The previous prime is 20465540027. The next prime is 20465540057. The reversal of 20465540045 is 54004556402.

It is not a de Polignac number, because 20465540045 - 2¹⁶ = 20465474509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20465539987 and 20465540014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41747 + ... + 206576.

It is an arithmetic number, because the mean of its divisors is an integer number (1568911032).

Almost surely, 2^20465540045 is an apocalyptic number.

It is an amenable number.

20465540045 is a deficient number, since it is larger than the sum of its proper divisors (4637036467).

20465540045 is a wasteful number, since it uses less digits than its factorization.

20465540045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248692.

The product of its (nonzero) digits is 96000, while the sum is 35.

The spelling of 20465540045 in words is "twenty billion, four hundred sixty-five million, five hundred forty thousand, forty-five".