154122220939 has 2 divisors, whose sum is σ = 154122220940. Its totient is φ = 154122220938.

The previous prime is 154122220933. The next prime is 154122220963. The reversal of 154122220939 is 939022221451.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 154122220939 - 2¹¹ = 154122218891 is a prime.

It is not a weakly prime, because it can be changed into another prime (154122220933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77061110469 + 77061110470.

It is an arithmetic number, because the mean of its divisors is an integer number (77061110470).

Almost surely, 2^154122220939 is an apocalyptic number.

154122220939 is a deficient number, since it is larger than the sum of its proper divisors (1).

154122220939 is an equidigital number, since it uses as much as digits as its factorization.

154122220939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 40.

The spelling of 154122220939 in words is "one hundred fifty-four billion, one hundred twenty-two million, two hundred twenty thousand, nine hundred thirty-nine".