20445537201 has 8 divisors (see below), whose sum is σ = 27707613504. Its totient is φ = 13406909520.

The previous prime is 20445537173. The next prime is 20445537253. The reversal of 20445537201 is 10273554402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20445537201 - 2⁶ = 20445537137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20445537701) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55861941 + ... + 55862306.

It is an arithmetic number, because the mean of its divisors is an integer number (3463451688).

Almost surely, 2^20445537201 is an apocalyptic number.

It is an amenable number.

20445537201 is a deficient number, since it is larger than the sum of its proper divisors (7262076303).

20445537201 is a wasteful number, since it uses less digits than its factorization.

20445537201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111724311.

The product of its (nonzero) digits is 33600, while the sum is 33.

The spelling of 20445537201 in words is "twenty billion, four hundred forty-five million, five hundred thirty-seven thousand, two hundred one".