2145029744747 has 2 divisors, whose sum is σ = 2145029744748. Its totient is φ = 2145029744746.

The previous prime is 2145029744569. The next prime is 2145029744761. The reversal of 2145029744747 is 7474479205412.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2145029744747 - 2²⁰ = 2145028696171 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2145029744692 and 2145029744701.

It is not a weakly prime, because it can be changed into another prime (2145029744047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072514872373 + 1072514872374.

It is an arithmetic number, because the mean of its divisors is an integer number (1072514872374).

Almost surely, 2^{2145029744747} is an apocalyptic number.

2145029744747 is a deficient number, since it is larger than the sum of its proper divisors (1).

2145029744747 is an equidigital number, since it uses as much as digits as its factorization.

2145029744747 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15805440, while the sum is 56.

The spelling of 2145029744747 in words is "two trillion, one hundred forty-five billion, twenty-nine million, seven hundred forty-four thousand, seven hundred forty-seven".