1645472985255 has 48 divisors (see below), whose sum is σ = 3121255391904. Its totient is φ = 795288272640.

The previous prime is 1645472985253. The next prime is 1645472985263. The reversal of 1645472985255 is 5525892745461.

1645472985255 is a `hidden beast` number, since 1 + 6 + 4 + 547 + 2 + 9 + 85 + 2 + 5 + 5 = 666.

It is not a de Polignac number, because 1645472985255 - 2¹ = 1645472985253 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1645472985192 and 1645472985201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1645472985253) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5086284 + ... + 5400113.

It is an arithmetic number, because the mean of its divisors is an integer number (65026153998).

Almost surely, 2^{1645472985255} is an apocalyptic number.

1645472985255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1645472985255 is a deficient number, since it is larger than the sum of its proper divisors (1475782406649).

1645472985255 is a wasteful number, since it uses less digits than its factorization.

1645472985255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10486736 (or 10486733 counting only the distinct ones).

The product of its digits is 120960000, while the sum is 63.

The spelling of 1645472985255 in words is "one trillion, six hundred forty-five billion, four hundred seventy-two million, nine hundred eighty-five thousand, two hundred fifty-five".