1245572311538 has 16 divisors (see below), whose sum is σ = 1876665218400. Its totient is φ = 620017461696.

The previous prime is 1245572311537. The next prime is 1245572311553. The reversal of 1245572311538 is 8351132755421.

It is a junction number, because it is equal to n+sod(n) for n = 1245572311492 and 1245572311501.

It is not an unprimeable number, because it can be changed into a prime (1245572311537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16714970 + ... + 16789322.

It is an arithmetic number, because the mean of its divisors is an integer number (117291576150).

Almost surely, 2^{1245572311538} is an apocalyptic number.

1245572311538 is a deficient number, since it is larger than the sum of its proper divisors (631092906862).

1245572311538 is a wasteful number, since it uses less digits than its factorization.

1245572311538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111481.

The product of its digits is 1008000, while the sum is 47.

The spelling of 1245572311538 in words is "one trillion, two hundred forty-five billion, five hundred seventy-two million, three hundred eleven thousand, five hundred thirty-eight".