20164035545 has 16 divisors (see below), whose sum is σ = 25126576272. Its totient is φ = 15522186240.

The previous prime is 20164035511. The next prime is 20164035581. The reversal of 20164035545 is 54553046102.

It can be written as a sum of positive squares in 8 ways, for example, as 565155529 + 19598880016 = 23773^2 + 139996^2 .

It is a de Polignac number, because none of the positive numbers 2^k-20164035545 is a prime.

It is a Duffinian 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, 658742 + ... + 688671.

It is an arithmetic number, because the mean of its divisors is an integer number (1570411017).

Almost surely, 2^20164035545 is an apocalyptic number.

It is an amenable number.

20164035545 is a deficient number, since it is larger than the sum of its proper divisors (4962540727).

20164035545 is a wasteful number, since it uses less digits than its factorization.

20164035545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1347532.

The product of its (nonzero) digits is 72000, while the sum is 35.

The spelling of 20164035545 in words is "twenty billion, one hundred sixty-four million, thirty-five thousand, five hundred forty-five".