23454345532421 has 16 divisors (see below), whose sum is σ = 23747202177600. Its totient is φ = 23163304320000.

The previous prime is 23454345532391. The next prime is 23454345532447. The reversal of 23454345532421 is 12423554345432.

It is a cyclic number.

It is not a de Polignac number, because 23454345532421 - 2⁶ = 23454345532357 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 (23454345537421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67354085 + ... + 67701413.

It is an arithmetic number, because the mean of its divisors is an integer number (1484200136100).

Almost surely, 2^{23454345532421} is an apocalyptic number.

It is an amenable number.

23454345532421 is a deficient number, since it is larger than the sum of its proper divisors (292856645179).

23454345532421 is a wasteful number, since it uses less digits than its factorization.

23454345532421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349940.

The product of its digits is 6912000, while the sum is 47.

Adding to 23454345532421 its reverse (12423554345432), we get a palindrome (35877899877853).

The spelling of 23454345532421 in words is "twenty-three trillion, four hundred fifty-four billion, three hundred forty-five million, five hundred thirty-two thousand, four hundred twenty-one".