1385351973611 has 4 divisors (see below), whose sum is σ = 1458265235400. Its totient is φ = 1312438711824.

The previous prime is 1385351973589. The next prime is 1385351973613. The reversal of 1385351973611 is 1163791535831.

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-1385351973611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1385351973613) 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, 36456630866 + ... + 36456630903.

It is an arithmetic number, because the mean of its divisors is an integer number (364566308850).

Almost surely, 2^{1385351973611} is an apocalyptic number.

1385351973611 is a deficient number, since it is larger than the sum of its proper divisors (72913261789).

1385351973611 is an equidigital number, since it uses as much as digits as its factorization.

1385351973611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72913261788.

The product of its digits is 2041200, while the sum is 53.

The spelling of 1385351973611 in words is "one trillion, three hundred eighty-five billion, three hundred fifty-one million, nine hundred seventy-three thousand, six hundred eleven".