1540324256201 has 2 divisors, whose sum is σ = 1540324256202. Its totient is φ = 1540324256200.

The previous prime is 1540324256189. The next prime is 1540324256231. The reversal of 1540324256201 is 1026524230451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 788808646201 + 751515610000 = 888149^2 + 866900^2 .

It is an emirp because it is prime and its reverse (1026524230451) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1540324256201 - 2³⁰ = 1539250514377 is a prime.

It is not a weakly prime, because it can be changed into another prime (1540324256231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 770162128100 + 770162128101.

It is an arithmetic number, because the mean of its divisors is an integer number (770162128101).

Almost surely, 2^{1540324256201} is an apocalyptic number.

It is an amenable number.

1540324256201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1540324256201 is an equidigital number, since it uses as much as digits as its factorization.

1540324256201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 57600, while the sum is 35.

Adding to 1540324256201 its reverse (1026524230451), we get a palindrome (2566848486652).

The spelling of 1540324256201 in words is "one trillion, five hundred forty billion, three hundred twenty-four million, two hundred fifty-six thousand, two hundred one".