23157443121205 has 8 divisors (see below), whose sum is σ = 27788981929632. Its totient is φ = 18525921040848.

The previous prime is 23157443121133. The next prime is 23157443121217. The reversal of 23157443121205 is 50212134475132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23157443121205 - 2³⁷ = 23020004167733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 902679 + ... + 6865108.

It is an arithmetic number, because the mean of its divisors is an integer number (3473622741204).

Almost surely, 2^{23157443121205} is an apocalyptic number.

It is an amenable number.

23157443121205 is a deficient number, since it is larger than the sum of its proper divisors (4631538808427).

23157443121205 is an equidigital number, since it uses as much as digits as its factorization.

23157443121205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8364035.

The product of its (nonzero) digits is 201600, while the sum is 40.

Adding to 23157443121205 its reverse (50212134475132), we get a palindrome (73369577596337).

The spelling of 23157443121205 in words is "twenty-three trillion, one hundred fifty-seven billion, four hundred forty-three million, one hundred twenty-one thousand, two hundred five".