2051510345323 has 4 divisors (see below), whose sum is σ = 2055621589000. Its totient is φ = 2047399101648.

The previous prime is 2051510345321. The next prime is 2051510345347. The reversal of 2051510345323 is 3235430151502.

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 2051510345323 - 2¹ = 2051510345321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2051510345321) 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, 2055621090 + ... + 2055622087.

It is an arithmetic number, because the mean of its divisors is an integer number (513905397250).

Almost surely, 2^{2051510345323} is an apocalyptic number.

2051510345323 is a deficient number, since it is larger than the sum of its proper divisors (4111243677).

2051510345323 is an equidigital number, since it uses as much as digits as its factorization.

2051510345323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4111243676.

The product of its (nonzero) digits is 54000, while the sum is 34.

Adding to 2051510345323 its reverse (3235430151502), we get a palindrome (5286940496825).

The spelling of 2051510345323 in words is "two trillion, fifty-one billion, five hundred ten million, three hundred forty-five thousand, three hundred twenty-three".