2145582019601 has 2 divisors, whose sum is σ = 2145582019602. Its totient is φ = 2145582019600.

The previous prime is 2145582019577. The next prime is 2145582019627. The reversal of 2145582019601 is 1069102855412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2018828931025 + 126753088576 = 1420855^2 + 356024^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2145582019601 is a prime.

It is not a weakly prime, because it can be changed into another prime (2145582009601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072791009800 + 1072791009801.

It is an arithmetic number, because the mean of its divisors is an integer number (1072791009801).

Almost surely, 2^{2145582019601} is an apocalyptic number.

It is an amenable number.

2145582019601 is a deficient number, since it is larger than the sum of its proper divisors (1).

2145582019601 is an equidigital number, since it uses as much as digits as its factorization.

2145582019601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 172800, while the sum is 44.

The spelling of 2145582019601 in words is "two trillion, one hundred forty-five billion, five hundred eighty-two million, nineteen thousand, six hundred one".