23402100531551 has 6 divisors (see below), whose sum is σ = 27222851638800. Its totient is φ = 20058943312716.

The previous prime is 23402100531517. The next prime is 23402100531571. The reversal of 23402100531551 is 15513500120432.

It is not a de Polignac number, because 23402100531551 - 2²⁶ = 23402033422687 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 (23402100531571) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 238796944151 + ... + 238796944248.

It is an arithmetic number, because the mean of its divisors is an integer number (4537141939800).

Almost surely, 2^{23402100531551} is an apocalyptic number.

23402100531551 is a deficient number, since it is larger than the sum of its proper divisors (3820751107249).

23402100531551 is an equidigital number, since it uses as much as digits as its factorization.

23402100531551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477593888413 (or 477593888406 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

Adding to 23402100531551 its reverse (15513500120432), we get a palindrome (38915600651983).

The spelling of 23402100531551 in words is "twenty-three trillion, four hundred two billion, one hundred million, five hundred thirty-one thousand, five hundred fifty-one".