1356024243645 has 20 divisors (see below), whose sum is σ = 2430799015260. Its totient is φ = 723212929728.

The previous prime is 1356024243631. The next prime is 1356024243649. The reversal of 1356024243645 is 5463424206531.

1356024243645 is a `hidden beast` number, since 1 + 3 + 5 + 602 + 4 + 2 + 4 + 36 + 4 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 309949406361 + 1046074837284 = 556731^2 + 1022778^2 .

It is not a de Polignac number, because 1356024243645 - 2⁸ = 1356024243389 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1356024243645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1356024243649) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1674103600 + ... + 1674104409.

It is an arithmetic number, because the mean of its divisors is an integer number (121539950763).

Almost surely, 2^{1356024243645} is an apocalyptic number.

1356024243645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1356024243645 is a deficient number, since it is larger than the sum of its proper divisors (1074774771615).

1356024243645 is an equidigital number, since it uses as much as digits as its factorization.

1356024243645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3348208026 (or 3348208017 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 45.

The spelling of 1356024243645 in words is "one trillion, three hundred fifty-six billion, twenty-four million, two hundred forty-three thousand, six hundred forty-five".