1351113605623 has 4 divisors (see below), whose sum is σ = 1430590876560. Its totient is φ = 1271636334688.

The previous prime is 1351113605579. The next prime is 1351113605689. The reversal of 1351113605623 is 3265063111531.

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-1351113605623 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 (1351113605693) 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, 39738635443 + ... + 39738635476.

It is an arithmetic number, because the mean of its divisors is an integer number (357647719140).

Almost surely, 2^{1351113605623} is an apocalyptic number.

1351113605623 is a deficient number, since it is larger than the sum of its proper divisors (79477270937).

1351113605623 is an equidigital number, since it uses as much as digits as its factorization.

1351113605623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79477270936.

The product of its (nonzero) digits is 48600, while the sum is 37.

The spelling of 1351113605623 in words is "one trillion, three hundred fifty-one billion, one hundred thirteen million, six hundred five thousand, six hundred twenty-three".