23420004105540 has 144 divisors (see below), whose sum is σ = 76553769043584. Its totient is φ = 5334093273600.

The previous prime is 23420004105499. The next prime is 23420004105581. The reversal of 23420004105540 is 4550140002432.

It is an interprime number because it is at equal distance from previous prime (23420004105499) and next prime (23420004105581).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 23420004105498 and 23420004105507.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13348216 + ... + 15000495.

It is an arithmetic number, because the mean of its divisors is an integer number (531623396136).

Almost surely, 2^{23420004105540} is an apocalyptic number.

23420004105540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23420004105540 is an abundant number, since it is smaller than the sum of its proper divisors (53133764938044).

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

23420004105540 is a wasteful number, since it uses less digits than its factorization.

23420004105540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28349018 (or 28349009 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 23420004105540 its reverse (4550140002432), we get a palindrome (27970144107972).

The spelling of 23420004105540 in words is "twenty-three trillion, four hundred twenty billion, four million, one hundred five thousand, five hundred forty".