154144078231 has 16 divisors (see below), whose sum is σ = 182694949920. Its totient is φ = 128206955520.

The previous prime is 154144078229. The next prime is 154144078259. The reversal of 154144078231 is 132870441451.

It is a cyclic number.

It is not a de Polignac number, because 154144078231 - 2¹ = 154144078229 is a prime.

It is a super-2 number, since 2×154144078231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154144078201) 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, 4753446 + ... + 4785763.

It is an arithmetic number, because the mean of its divisors is an integer number (11418434370).

Almost surely, 2^154144078231 is an apocalyptic number.

154144078231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

154144078231 is a deficient number, since it is larger than the sum of its proper divisors (28550871689).

154144078231 is a wasteful number, since it uses less digits than its factorization.

154144078231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9539346.

The product of its (nonzero) digits is 107520, while the sum is 40.

The spelling of 154144078231 in words is "one hundred fifty-four billion, one hundred forty-four million, seventy-eight thousand, two hundred thirty-one".