1349973821351 has 4 divisors (see below), whose sum is σ = 1350306577152. Its totient is φ = 1349641065552.

The previous prime is 1349973821347. The next prime is 1349973821411. The reversal of 1349973821351 is 1531283799431.

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

It is a cyclic number.

It is not a de Polignac number, because 1349973821351 - 2² = 1349973821347 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 (1349973821551) 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, 166371815 + ... + 166379928.

It is an arithmetic number, because the mean of its divisors is an integer number (337576644288).

Almost surely, 2^{1349973821351} is an apocalyptic number.

1349973821351 is a deficient number, since it is larger than the sum of its proper divisors (332755801).

1349973821351 is an equidigital number, since it uses as much as digits as its factorization.

1349973821351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332755800.

The product of its digits is 4898880, while the sum is 56.

The spelling of 1349973821351 in words is "one trillion, three hundred forty-nine billion, nine hundred seventy-three million, eight hundred twenty-one thousand, three hundred fifty-one".