7481938569013 has 4 divisors (see below), whose sum is σ = 7482248622508. Its totient is φ = 7481628515520.

The previous prime is 7481938568969. The next prime is 7481938569043. The reversal of 7481938569013 is 3109658391847.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6083637049009 + 1398301520004 = 2466503^2 + 1182498^2 .

It is a cyclic number.

It is not a de Polignac number, because 7481938569013 - 2¹³ = 7481938560821 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 (7481938569043) 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, 154990548 + ... + 155038813.

It is an arithmetic number, because the mean of its divisors is an integer number (1870562155627).

Almost surely, 2^{7481938569013} is an apocalyptic number.

It is an amenable number.

7481938569013 is a deficient number, since it is larger than the sum of its proper divisors (310053495).

7481938569013 is a wasteful number, since it uses less digits than its factorization.

7481938569013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310053494.

The product of its (nonzero) digits is 39191040, while the sum is 64.

The spelling of 7481938569013 in words is "seven trillion, four hundred eighty-one billion, nine hundred thirty-eight million, five hundred sixty-nine thousand, thirteen".