1345061661055 has 16 divisors (see below), whose sum is σ = 1924858427904. Its totient is φ = 882226778400.

The previous prime is 1345061661049. The next prime is 1345061661103. The reversal of 1345061661055 is 5501661605431.

It is not a de Polignac number, because 1345061661055 - 2¹⁷ = 1345061529983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 835441221 + ... + 835442830.

It is an arithmetic number, because the mean of its divisors is an integer number (120303651744).

Almost surely, 2^{1345061661055} is an apocalyptic number.

1345061661055 is a deficient number, since it is larger than the sum of its proper divisors (579796766849).

1345061661055 is a wasteful number, since it uses less digits than its factorization.

1345061661055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1670884086.

The product of its (nonzero) digits is 324000, while the sum is 43.

The spelling of 1345061661055 in words is "one trillion, three hundred forty-five billion, sixty-one million, six hundred sixty-one thousand, fifty-five".