2320642306551 has 16 divisors (see below), whose sum is σ = 3095512842240. Its totient is φ = 1546433471520.

The previous prime is 2320642306531. The next prime is 2320642306583. The reversal of 2320642306551 is 1556032460232.

It is not a de Polignac number, because 2320642306551 - 2⁹ = 2320642306039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2320642306531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88862986 + ... + 88889096.

It is an arithmetic number, because the mean of its divisors is an integer number (193469552640).

Almost surely, 2^{2320642306551} is an apocalyptic number.

2320642306551 is a deficient number, since it is larger than the sum of its proper divisors (774870535689).

2320642306551 is a wasteful number, since it uses less digits than its factorization.

2320642306551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37646.

The product of its (nonzero) digits is 259200, while the sum is 39.

Adding to 2320642306551 its reverse (1556032460232), we get a palindrome (3876674766783).

The spelling of 2320642306551 in words is "two trillion, three hundred twenty billion, six hundred forty-two million, three hundred six thousand, five hundred fifty-one".