2123306340551 has 16 divisors (see below), whose sum is σ = 2473504819200. Its totient is φ = 1803597247200.

The previous prime is 2123306340527. The next prime is 2123306340553. The reversal of 2123306340551 is 1550436033212.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2123306340551 - 2¹⁸ = 2123306078407 is a prime.

It is a super-3 number, since 3×2123306340551³ (a number of 38 digits) contains 333 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 (2123306340553) 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, 107347091 + ... + 107366868.

It is an arithmetic number, because the mean of its divisors is an integer number (154594051200).

Almost surely, 2^{2123306340551} is an apocalyptic number.

2123306340551 is a deficient number, since it is larger than the sum of its proper divisors (350198478649).

2123306340551 is a wasteful number, since it uses less digits than its factorization.

2123306340551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214714030.

The product of its (nonzero) digits is 64800, while the sum is 35.

The spelling of 2123306340551 in words is "two trillion, one hundred twenty-three billion, three hundred six million, three hundred forty thousand, five hundred fifty-one".