20136044445 has 32 divisors (see below), whose sum is σ = 35362220544. Its totient is φ = 9703022400.

The previous prime is 20136044441. The next prime is 20136044449. The reversal of 20136044445 is 54444063102.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20136044441) and next prime (20136044449).

It is not a de Polignac number, because 20136044445 - 2² = 20136044441 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20136044441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 347451 + ... + 401240.

It is an arithmetic number, because the mean of its divisors is an integer number (1105069392).

Almost surely, 2^20136044445 is an apocalyptic number.

It is an amenable number.

20136044445 is a deficient number, since it is larger than the sum of its proper divisors (15226176099).

20136044445 is a wasteful number, since it uses less digits than its factorization.

20136044445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748873.

The product of its (nonzero) digits is 46080, while the sum is 33.

The spelling of 20136044445 in words is "twenty billion, one hundred thirty-six million, forty-four thousand, four hundred forty-five".