20445503001 has 32 divisors (see below), whose sum is σ = 34466052096. Its totient is φ = 10471440000.

The previous prime is 20445502997. The next prime is 20445503021. The reversal of 20445503001 is 10030554402.

It is not a de Polignac number, because 20445503001 - 2² = 20445502997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20445503021) 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, 606900 + ... + 639701.

It is an arithmetic number, because the mean of its divisors is an integer number (1077064128).

Almost surely, 2^20445503001 is an apocalyptic number.

20445503001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20445503001 is a deficient number, since it is larger than the sum of its proper divisors (14020549095).

20445503001 is a wasteful number, since it uses less digits than its factorization.

20445503001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1246693.

The product of its (nonzero) digits is 2400, while the sum is 24.

The spelling of 20445503001 in words is "twenty billion, four hundred forty-five million, five hundred three thousand, one".