2145465423551 has 2 divisors, whose sum is σ = 2145465423552. Its totient is φ = 2145465423550.

The previous prime is 2145465423527. The next prime is 2145465423611. The reversal of 2145465423551 is 1553245645412.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2145465423551 - 2¹⁴ = 2145465407167 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2145465423496 and 2145465423505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2145465023551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072732711775 + 1072732711776.

It is an arithmetic number, because the mean of its divisors is an integer number (1072732711776).

Almost surely, 2^{2145465423551} is an apocalyptic number.

2145465423551 is a deficient number, since it is larger than the sum of its proper divisors (1).

2145465423551 is an equidigital number, since it uses as much as digits as its factorization.

2145465423551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880000, while the sum is 47.

The spelling of 2145465423551 in words is "two trillion, one hundred forty-five billion, four hundred sixty-five million, four hundred twenty-three thousand, five hundred fifty-one".