1345312640505 has 32 divisors (see below), whose sum is σ = 2246259133440. Its totient is φ = 686251881920.

The previous prime is 1345312640473. The next prime is 1345312640519. The reversal of 1345312640505 is 5050462135431.

It is a happy number.

It is not a de Polignac number, because 1345312640505 - 2⁵ = 1345312640473 is a prime.

It is a super-2 number, since 2×1345312640505² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4580986 + ... + 4865804.

It is an arithmetic number, because the mean of its divisors is an integer number (70195597920).

Almost surely, 2^{1345312640505} is an apocalyptic number.

1345312640505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1345312640505 is a deficient number, since it is larger than the sum of its proper divisors (900946492935).

1345312640505 is a wasteful number, since it uses less digits than its factorization.

1345312640505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298541.

The product of its (nonzero) digits is 216000, while the sum is 39.

Adding to 1345312640505 its reverse (5050462135431), we get a palindrome (6395774775936).

The spelling of 1345312640505 in words is "one trillion, three hundred forty-five billion, three hundred twelve million, six hundred forty thousand, five hundred five".