20154266053 has 4 divisors (see below), whose sum is σ = 20166060780. Its totient is φ = 20142471328.

The previous prime is 20154266009. The next prime is 20154266059. The reversal of 20154266053 is 35066245102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10883079684 + 9271186369 = 104322^2 + 96287^2 .

It is a cyclic number.

It is not a de Polignac number, because 20154266053 - 2⁹ = 20154265541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20154266059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5894800 + ... + 5898217.

It is an arithmetic number, because the mean of its divisors is an integer number (5041515195).

Almost surely, 2^20154266053 is an apocalyptic number.

It is an amenable number.

20154266053 is a deficient number, since it is larger than the sum of its proper divisors (11794727).

20154266053 is a wasteful number, since it uses less digits than its factorization.

20154266053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11794726.

The product of its (nonzero) digits is 43200, while the sum is 34.

The spelling of 20154266053 in words is "twenty billion, one hundred fifty-four million, two hundred sixty-six thousand, fifty-three".