23421205415 has 16 divisors (see below), whose sum is σ = 28232027712. Its totient is φ = 18652667904.

The previous prime is 23421205403. The next prime is 23421205429. The reversal of 23421205415 is 51450212432.

It is a cyclic number.

It is not a de Polignac number, because 23421205415 - 2²⁰ = 23420156839 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 15 ways as a sum of consecutive naturals, for example, 2561582 + ... + 2570708.

It is an arithmetic number, because the mean of its divisors is an integer number (1764501732).

Almost surely, 2^23421205415 is an apocalyptic number.

23421205415 is a deficient number, since it is larger than the sum of its proper divisors (4810822297).

23421205415 is a wasteful number, since it uses less digits than its factorization.

23421205415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11386.

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 23421205415 its reverse (51450212432), we get a palindrome (74871417847).

The spelling of 23421205415 in words is "twenty-three billion, four hundred twenty-one million, two hundred five thousand, four hundred fifteen".