154469855551 has 16 divisors (see below), whose sum is σ = 170614459008. Its totient is φ = 138676989600.

The previous prime is 154469855549. The next prime is 154469855569. The reversal of 154469855551 is 155558964451.

It is a cyclic number.

It is not a de Polignac number, because 154469855551 - 2¹ = 154469855549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154469855521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2218081 + ... + 2286661.

It is an arithmetic number, because the mean of its divisors is an integer number (10663403688).

Almost surely, 2^154469855551 is an apocalyptic number.

154469855551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

154469855551 is a deficient number, since it is larger than the sum of its proper divisors (16144603457).

154469855551 is a wasteful number, since it uses less digits than its factorization.

154469855551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71142.

The product of its digits is 21600000, while the sum is 58.

The spelling of 154469855551 in words is "one hundred fifty-four billion, four hundred sixty-nine million, eight hundred fifty-five thousand, five hundred fifty-one".