1647353216145 has 64 divisors (see below), whose sum is σ = 3292437012480. Its totient is φ = 684771487488.

The previous prime is 1647353216129. The next prime is 1647353216177. The reversal of 1647353216145 is 5416123537461.

It is not a de Polignac number, because 1647353216145 - 2⁴ = 1647353216129 is a prime.

It is a super-2 number, since 2×1647353216145² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1647353216094 and 1647353216103.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8914905 + ... + 9097814.

It is an arithmetic number, because the mean of its divisors is an integer number (51444328320).

Almost surely, 2^{1647353216145} is an apocalyptic number.

1647353216145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1647353216145 is a deficient number, since it is larger than the sum of its proper divisors (1645083796335).

1647353216145 is a wasteful number, since it uses less digits than its factorization.

1647353216145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18012814.

The product of its digits is 1814400, while the sum is 48.

The spelling of 1647353216145 in words is "one trillion, six hundred forty-seven billion, three hundred fifty-three million, two hundred sixteen thousand, one hundred forty-five".