1540265064223 has 4 divisors (see below), whose sum is σ = 1540271202120. Its totient is φ = 1540258926328.

The previous prime is 1540265064179. The next prime is 1540265064259. The reversal of 1540265064223 is 3224605620451.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1540265064223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1540265064263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2675740 + ... + 3200017.

It is an arithmetic number, because the mean of its divisors is an integer number (385067800530).

Almost surely, 2^{1540265064223} is an apocalyptic number.

1540265064223 is a deficient number, since it is larger than the sum of its proper divisors (6137897).

1540265064223 is an equidigital number, since it uses as much as digits as its factorization.

1540265064223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6137896.

The product of its (nonzero) digits is 345600, while the sum is 40.

The spelling of 1540265064223 in words is "one trillion, five hundred forty billion, two hundred sixty-five million, sixty-four thousand, two hundred twenty-three".