22431200432551 has 4 divisors (see below), whose sum is σ = 22548641272704. Its totient is φ = 22313759592400.

The previous prime is 22431200432549. The next prime is 22431200432561. The reversal of 22431200432551 is 15523400213422.

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 22431200432551 - 2¹ = 22431200432549 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 (22431200432521) 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, 58720419790 + ... + 58720420171.

It is an arithmetic number, because the mean of its divisors is an integer number (5637160318176).

Almost surely, 2^{22431200432551} is an apocalyptic number.

22431200432551 is a deficient number, since it is larger than the sum of its proper divisors (117440840153).

22431200432551 is a wasteful number, since it uses less digits than its factorization.

22431200432551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117440840152.

The product of its (nonzero) digits is 57600, while the sum is 34.

Adding to 22431200432551 its reverse (15523400213422), we get a palindrome (37954600645973).

The spelling of 22431200432551 in words is "twenty-two trillion, four hundred thirty-one billion, two hundred million, four hundred thirty-two thousand, five hundred fifty-one".