7381374135109 has 4 divisors (see below), whose sum is σ = 7949172145516. Its totient is φ = 6813576124704.

The previous prime is 7381374135053. The next prime is 7381374135181. The reversal of 7381374135109 is 9015314731837.

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 4880873932900 + 2500500202209 = 2209270^2 + 1581297^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7381374135109 is a prime.

It is a super-2 number, since 2×7381374135109² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7381374135409) 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, 283899005184 + ... + 283899005209.

It is an arithmetic number, because the mean of its divisors is an integer number (1987293036379).

Almost surely, 2^{7381374135109} is an apocalyptic number.

It is an amenable number.

7381374135109 is a deficient number, since it is larger than the sum of its proper divisors (567798010407).

7381374135109 is a wasteful number, since it uses less digits than its factorization.

7381374135109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567798010406.

The product of its (nonzero) digits is 1905120, while the sum is 52.

The spelling of 7381374135109 in words is "seven trillion, three hundred eighty-one billion, three hundred seventy-four million, one hundred thirty-five thousand, one hundred nine".