154231532511911 has 2 divisors, whose sum is σ = 154231532511912. Its totient is φ = 154231532511910.

The previous prime is 154231532511781. The next prime is 154231532511989. The reversal of 154231532511911 is 119115235132451.

154231532511911 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-154231532511911 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154231532516911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77115766255955 + 77115766255956.

It is an arithmetic number, because the mean of its divisors is an integer number (77115766255956).

Almost surely, 2^{154231532511911} is an apocalyptic number.

154231532511911 is a deficient number, since it is larger than the sum of its proper divisors (1).

154231532511911 is an equidigital number, since it uses as much as digits as its factorization.

154231532511911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 162000, while the sum is 44.

The spelling of 154231532511911 in words is "one hundred fifty-four trillion, two hundred thirty-one billion, five hundred thirty-two million, five hundred eleven thousand, nine hundred eleven".