23154242012 has 72 divisors (see below), whose sum is σ = 47225384640. Its totient is φ = 9891481600.

The previous prime is 23154242011. The next prime is 23154242053. The reversal of 23154242012 is 21024245132.

It is a super-2 number, since 2×23154242012² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23154242011) 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 23 ways as a sum of consecutive naturals, for example, 7494164 + ... + 7497252.

It is an arithmetic number, because the mean of its divisors is an integer number (655908120).

Almost surely, 2^23154242012 is an apocalyptic number.

23154242012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

23154242012 is an abundant number, since it is smaller than the sum of its proper divisors (24071142628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23154242012 is a wasteful number, since it uses less digits than its factorization.

23154242012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4043 (or 4030 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 23154242012 its reverse (21024245132), we get a palindrome (44178487144).

The spelling of 23154242012 in words is "twenty-three billion, one hundred fifty-four million, two hundred forty-two thousand, twelve".