22054138157 has 2 divisors, whose sum is σ = 22054138158. Its totient is φ = 22054138156.

The previous prime is 22054138129. The next prime is 22054138159. The reversal of 22054138157 is 75183145022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21991110436 + 63027721 = 148294^2 + 7939^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22054138157 is a prime.

Together with 22054138159, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22054138157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22054138159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11027069078 + 11027069079.

It is an arithmetic number, because the mean of its divisors is an integer number (11027069079).

Almost surely, 2^22054138157 is an apocalyptic number.

It is an amenable number.

22054138157 is a deficient number, since it is larger than the sum of its proper divisors (1).

22054138157 is an equidigital number, since it uses as much as digits as its factorization.

22054138157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 67200, while the sum is 38.

The spelling of 22054138157 in words is "twenty-two billion, fifty-four million, one hundred thirty-eight thousand, one hundred fifty-seven".