23002277551 has 4 divisors (see below), whose sum is σ = 25093393704. Its totient is φ = 20911161400.

The previous prime is 23002277539. The next prime is 23002277579. The reversal of 23002277551 is 15577220032.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23002277551 - 2¹⁹ = 23001753263 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 (23002277531) 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, 1045558060 + ... + 1045558081.

It is an arithmetic number, because the mean of its divisors is an integer number (6273348426).

Almost surely, 2^23002277551 is an apocalyptic number.

23002277551 is a deficient number, since it is larger than the sum of its proper divisors (2091116153).

23002277551 is a wasteful number, since it uses less digits than its factorization.

23002277551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2091116152.

The product of its (nonzero) digits is 29400, while the sum is 34.

Adding to 23002277551 its reverse (15577220032), we get a palindrome (38579497583).

The spelling of 23002277551 in words is "twenty-three billion, two million, two hundred seventy-seven thousand, five hundred fifty-one".