23501220551453 has 4 divisors (see below), whose sum is σ = 23504797063968. Its totient is φ = 23497644038940.

The previous prime is 23501220551449. The next prime is 23501220551477. The reversal of 23501220551453 is 35415502210532.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23501220551453 - 2² = 23501220551449 is a prime.

It is a super-2 number, since 2×23501220551453² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23501220550453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1788246401 + ... + 1788259542.

It is an arithmetic number, because the mean of its divisors is an integer number (5876199265992).

Almost surely, 2^{23501220551453} is an apocalyptic number.

It is an amenable number.

23501220551453 is a deficient number, since it is larger than the sum of its proper divisors (3576512515).

23501220551453 is an equidigital number, since it uses as much as digits as its factorization.

23501220551453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3576512514.

The product of its (nonzero) digits is 180000, while the sum is 38.

Adding to 23501220551453 its reverse (35415502210532), we get a palindrome (58916722761985).

The spelling of 23501220551453 in words is "twenty-three trillion, five hundred one billion, two hundred twenty million, five hundred fifty-one thousand, four hundred fifty-three".