23154777143 has 6 divisors (see below), whose sum is σ = 24162268104. Its totient is φ = 22147349664.

The previous prime is 23154777131. The next prime is 23154777169. The reversal of 23154777143 is 34177745132.

It is not a de Polignac number, because 23154777143 - 2¹⁰ = 23154776119 is a prime.

It is a super-2 number, since 2×23154777143² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23154777094 and 23154777103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23154777103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 713903 + ... + 745631.

It is an arithmetic number, because the mean of its divisors is an integer number (4027044684).

Almost surely, 2^23154777143 is an apocalyptic number.

23154777143 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

23154777143 is a deficient number, since it is larger than the sum of its proper divisors (1007490961).

23154777143 is an frugal number, since it uses more digits than its factorization.

23154777143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63481 (or 31752 counting only the distinct ones).

The product of its digits is 493920, while the sum is 44.

The spelling of 23154777143 in words is "twenty-three billion, one hundred fifty-four million, seven hundred seventy-seven thousand, one hundred forty-three".