20154253223 has 8 divisors (see below), whose sum is σ = 21709632000. Its totient is φ = 18599596128.

The previous prime is 20154253121. The next prime is 20154253243. The reversal of 20154253223 is 32235245102.

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

It is a cyclic number.

It is not a de Polignac number, because 20154253223 - 2¹² = 20154249127 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 (20154253243) 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, 121703 + ... + 234776.

It is an arithmetic number, because the mean of its divisors is an integer number (2713704000).

Almost surely, 2^20154253223 is an apocalyptic number.

20154253223 is a deficient number, since it is larger than the sum of its proper divisors (1555378777).

20154253223 is a wasteful number, since it uses less digits than its factorization.

20154253223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360841.

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 20154253223 its reverse (32235245102), we get a palindrome (52389498325).

The spelling of 20154253223 in words is "twenty billion, one hundred fifty-four million, two hundred fifty-three thousand, two hundred twenty-three".