1345351220155 has 4 divisors (see below), whose sum is σ = 1614421464192. Its totient is φ = 1076280976120.

The previous prime is 1345351220131. The next prime is 1345351220159. The reversal of 1345351220155 is 5510221535431.

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

It is not a de Polignac number, because 1345351220155 - 2¹⁵ = 1345351187387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1345351220159) 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, 134535122011 + ... + 134535122020.

It is an arithmetic number, because the mean of its divisors is an integer number (403605366048).

Almost surely, 2^{1345351220155} is an apocalyptic number.

1345351220155 is a deficient number, since it is larger than the sum of its proper divisors (269070244037).

1345351220155 is an equidigital number, since it uses as much as digits as its factorization.

1345351220155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269070244036.

The product of its (nonzero) digits is 90000, while the sum is 37.

Adding to 1345351220155 its reverse (5510221535431), we get a palindrome (6855572755586).

The spelling of 1345351220155 in words is "one trillion, three hundred forty-five billion, three hundred fifty-one million, two hundred twenty thousand, one hundred fifty-five".