1355005661045 has 16 divisors (see below), whose sum is σ = 1635516681840. Its totient is φ = 1077665455104.

The previous prime is 1355005661039. The next prime is 1355005661057. The reversal of 1355005661045 is 5401665005531.

It can be written as a sum of positive squares in 8 ways, for example, as 2513417956 + 1352492243089 = 50134^2 + 1162967^2 .

It is a cyclic number.

It is not a de Polignac number, because 1355005661045 - 2¹⁴ = 1355005644661 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1355005660993 and 1355005661011.

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, 15239357 + ... + 15328013.

It is an arithmetic number, because the mean of its divisors is an integer number (102219792615).

Almost surely, 2^{1355005661045} is an apocalyptic number.

It is an amenable number.

1355005661045 is a deficient number, since it is larger than the sum of its proper divisors (280511020795).

1355005661045 is a wasteful number, since it uses less digits than its factorization.

1355005661045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106504.

The product of its (nonzero) digits is 270000, while the sum is 41.

The spelling of 1355005661045 in words is "one trillion, three hundred fifty-five billion, five million, six hundred sixty-one thousand, forty-five".