154591139471 has 2 divisors, whose sum is σ = 154591139472. Its totient is φ = 154591139470.

The previous prime is 154591139431. The next prime is 154591139489. The reversal of 154591139471 is 174931195451.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 154591139471 - 2¹⁰ = 154591138447 is a prime.

It is a super-3 number, since 3×154591139471³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154591139431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77295569735 + 77295569736.

It is an arithmetic number, because the mean of its divisors is an integer number (77295569736).

Almost surely, 2^154591139471 is an apocalyptic number.

154591139471 is a deficient number, since it is larger than the sum of its proper divisors (1).

154591139471 is an equidigital number, since it uses as much as digits as its factorization.

154591139471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 680400, while the sum is 50.

The spelling of 154591139471 in words is "one hundred fifty-four billion, five hundred ninety-one million, one hundred thirty-nine thousand, four hundred seventy-one".