1405136355645 has 64 divisors (see below), whose sum is σ = 2478055016448. Its totient is φ = 674214240000.

The previous prime is 1405136355641. The next prime is 1405136355691. The reversal of 1405136355645 is 5465536315041.

It is not a de Polignac number, because 1405136355645 - 2² = 1405136355641 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1405136355594 and 1405136355603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1405136355641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 37360800 + ... + 37398390.

It is an arithmetic number, because the mean of its divisors is an integer number (38719609632).

Almost surely, 2^{1405136355645} is an apocalyptic number.

1405136355645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1405136355645 is a deficient number, since it is larger than the sum of its proper divisors (1072918660803).

1405136355645 is a wasteful number, since it uses less digits than its factorization.

1405136355645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39954.

The product of its (nonzero) digits is 3240000, while the sum is 48.

The spelling of 1405136355645 in words is "one trillion, four hundred five billion, one hundred thirty-six million, three hundred fifty-five thousand, six hundred forty-five".