23423144661461 has 4 divisors (see below), whose sum is σ = 23448856127424. Its totient is φ = 23397433195500.

The previous prime is 23423144661409. The next prime is 23423144661463. The reversal of 23423144661461 is 16416644132432.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23423144661461 - 2²² = 23423140467157 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 (23423144661463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12855731615 + ... + 12855733436.

It is an arithmetic number, because the mean of its divisors is an integer number (5862214031856).

Almost surely, 2^{23423144661461} is an apocalyptic number.

It is an amenable number.

23423144661461 is a deficient number, since it is larger than the sum of its proper divisors (25711465963).

23423144661461 is an equidigital number, since it uses as much as digits as its factorization.

23423144661461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25711465962.

The product of its digits is 1990656, while the sum is 47.

Adding to 23423144661461 its reverse (16416644132432), we get a palindrome (39839788793893).

The spelling of 23423144661461 in words is "twenty-three trillion, four hundred twenty-three billion, one hundred forty-four million, six hundred sixty-one thousand, four hundred sixty-one".