1345273709897 has 32 divisors (see below), whose sum is σ = 1538123779584. Its totient is φ = 1165589222400.

The previous prime is 1345273709881. The next prime is 1345273709903. The reversal of 1345273709897 is 7989073725431.

It is a cyclic number.

It is not a de Polignac number, because 1345273709897 - 2⁴ = 1345273709881 is a prime.

It is a super-2 number, since 2×1345273709897² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1345273709827) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 163435772 + ... + 163444002.

It is an arithmetic number, because the mean of its divisors is an integer number (48066368112).

Almost surely, 2^{1345273709897} is an apocalyptic number.

1345273709897 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1345273709897 is a deficient number, since it is larger than the sum of its proper divisors (192850069687).

1345273709897 is a wasteful number, since it uses less digits than its factorization.

1345273709897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10169.

The product of its (nonzero) digits is 80015040, while the sum is 65.

The spelling of 1345273709897 in words is "one trillion, three hundred forty-five billion, two hundred seventy-three million, seven hundred nine thousand, eight hundred ninety-seven".