20553500001 has 8 divisors (see below), whose sum is σ = 27405711424. Its totient is φ = 13701810960.

The previous prime is 20553499961. The next prime is 20553500027. The reversal of 20553500001 is 10000535502.

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

It is not a de Polignac number, because 20553500001 - 2¹³ = 20553491809 is a prime.

It is a super-2 number, since 2×20553500001² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20553500501) 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, 27061 + ... + 204546.

It is an arithmetic number, because the mean of its divisors is an integer number (3425713928).

Almost surely, 2^20553500001 is an apocalyptic number.

It is an amenable number.

20553500001 is a deficient number, since it is larger than the sum of its proper divisors (6852211423).

20553500001 is a wasteful number, since it uses less digits than its factorization.

20553500001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261191.

The product of its (nonzero) digits is 750, while the sum is 21.

The spelling of 20553500001 in words is "twenty billion, five hundred fifty-three million, five hundred thousand, one".