23421501535421 has 8 divisors (see below), whose sum is σ = 25858569056544. Its totient is φ = 21035740699120.

The previous prime is 23421501535409. The next prime is 23421501535469. The reversal of 23421501535421 is 12453510512432.

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 23421501535421 - 2¹⁴ = 23421501519037 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 (23421501535921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12826670246 + ... + 12826672071.

It is an arithmetic number, because the mean of its divisors is an integer number (3232321132068).

Almost surely, 2^{23421501535421} is an apocalyptic number.

It is an amenable number.

23421501535421 is a deficient number, since it is larger than the sum of its proper divisors (2437067521123).

23421501535421 is a wasteful number, since it uses less digits than its factorization.

23421501535421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25653342411.

The product of its (nonzero) digits is 144000, while the sum is 38.

The spelling of 23421501535421 in words is "twenty-three trillion, four hundred twenty-one billion, five hundred one million, five hundred thirty-five thousand, four hundred twenty-one".