2617785545 has 16 divisors (see below), whose sum is σ = 3433425408. Its totient is φ = 1907454720.

The previous prime is 2617785517. The next prime is 2617785559. The reversal of 2617785545 is 5455877162.

It is not a de Polignac number, because 2617785545 - 2⁶ = 2617785481 is a prime.

It is a super-2 number, since 2×2617785545² = 13705602319221894050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2617785493 and 2617785502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 494099 + ... + 499368.

It is an arithmetic number, because the mean of its divisors is an integer number (214589088).

Almost surely, 2^2617785545 is an apocalyptic number.

It is an amenable number.

2617785545 is a deficient number, since it is larger than the sum of its proper divisors (815639863).

2617785545 is a wasteful number, since it uses less digits than its factorization.

2617785545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 993520.

The product of its digits is 2352000, while the sum is 50.

The square root of 2617785545 is about 51164.2995163620. The cubic root of 2617785545 is about 1378.1971741072.

The spelling of 2617785545 in words is "two billion, six hundred seventeen million, seven hundred eighty-five thousand, five hundred forty-five".