2123102646455 has 16 divisors (see below), whose sum is σ = 2911996790784. Its totient is φ = 1455685234080.

The previous prime is 2123102646419. The next prime is 2123102646463. The reversal of 2123102646455 is 5546462013212.

It is a de Polignac number, because none of the positive numbers 2^k-2123102646455 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2931557 + ... + 3583326.

It is an arithmetic number, because the mean of its divisors is an integer number (181999799424).

Almost surely, 2^{2123102646455} is an apocalyptic number.

2123102646455 is a deficient number, since it is larger than the sum of its proper divisors (788894144329).

2123102646455 is an equidigital number, since it uses as much as digits as its factorization.

2123102646455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6524206.

The product of its (nonzero) digits is 345600, while the sum is 41.

Adding to 2123102646455 its reverse (5546462013212), we get a palindrome (7669564659667).

The spelling of 2123102646455 in words is "two trillion, one hundred twenty-three billion, one hundred two million, six hundred forty-six thousand, four hundred fifty-five".