2113662515551 has 2 divisors, whose sum is σ = 2113662515552. Its totient is φ = 2113662515550.

The previous prime is 2113662515537. The next prime is 2113662515561. The reversal of 2113662515551 is 1555152663112.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2113662515551 - 2¹⁷ = 2113662384479 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2113662515498 and 2113662515507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2113662515561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056831257775 + 1056831257776.

It is an arithmetic number, because the mean of its divisors is an integer number (1056831257776).

Almost surely, 2^{2113662515551} is an apocalyptic number.

2113662515551 is a deficient number, since it is larger than the sum of its proper divisors (1).

2113662515551 is an equidigital number, since it uses as much as digits as its factorization.

2113662515551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 270000, while the sum is 43.

The spelling of 2113662515551 in words is "two trillion, one hundred thirteen billion, six hundred sixty-two million, five hundred fifteen thousand, five hundred fifty-one".