2051251046123 has 2 divisors, whose sum is σ = 2051251046124. Its totient is φ = 2051251046122.

The previous prime is 2051251046081. The next prime is 2051251046249. The reversal of 2051251046123 is 3216401521502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2051251046123 - 2⁸ = 2051251045867 is a prime.

It is a super-2 number, since 2×2051251046123² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2051251046123.

It is not a weakly prime, because it can be changed into another prime (2051251046623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1025625523061 + 1025625523062.

It is an arithmetic number, because the mean of its divisors is an integer number (1025625523062).

Almost surely, 2^{2051251046123} is an apocalyptic number.

2051251046123 is a deficient number, since it is larger than the sum of its proper divisors (1).

2051251046123 is an equidigital number, since it uses as much as digits as its factorization.

2051251046123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14400, while the sum is 32.

Adding to 2051251046123 its reverse (3216401521502), we get a palindrome (5267652567625).

The spelling of 2051251046123 in words is "two trillion, fifty-one billion, two hundred fifty-one million, forty-six thousand, one hundred twenty-three".