20154500227 has 2 divisors, whose sum is σ = 20154500228. Its totient is φ = 20154500226.

The previous prime is 20154500221. The next prime is 20154500231. The reversal of 20154500227 is 72200545102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20154500227 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20154500195 and 20154500204.

It is not a weakly prime, because it can be changed into another prime (20154500221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10077250113 + 10077250114.

It is an arithmetic number, because the mean of its divisors is an integer number (10077250114).

Almost surely, 2^20154500227 is an apocalyptic number.

20154500227 is a deficient number, since it is larger than the sum of its proper divisors (1).

20154500227 is an equidigital number, since it uses as much as digits as its factorization.

20154500227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5600, while the sum is 28.

The spelling of 20154500227 in words is "twenty billion, one hundred fifty-four million, five hundred thousand, two hundred twenty-seven".