154340444222 has 4 divisors (see below), whose sum is σ = 231510666336. Its totient is φ = 77170222110.

The previous prime is 154340444213. The next prime is 154340444227. The reversal of 154340444222 is 222444043451.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154340444227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38585111054 + ... + 38585111057.

It is an arithmetic number, because the mean of its divisors is an integer number (57877666584).

Almost surely, 2^154340444222 is an apocalyptic number.

154340444222 is a deficient number, since it is larger than the sum of its proper divisors (77170222114).

154340444222 is an equidigital number, since it uses as much as digits as its factorization.

154340444222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77170222113.

The product of its (nonzero) digits is 122880, while the sum is 35.

Adding to 154340444222 its reverse (222444043451), we get a palindrome (376784487673).

The spelling of 154340444222 in words is "one hundred fifty-four billion, three hundred forty million, four hundred forty-four thousand, two hundred twenty-two".