55307783257605 has 48 divisors (see below), whose sum is σ = 96127784064000. Its totient is φ = 29417288963328.

The previous prime is 55307783257603. The next prime is 55307783257621. The reversal of 55307783257605 is 50675238770355.

55307783257605 is a `hidden beast` number, since 5 + 5 + 307 + 78 + 3 + 257 + 6 + 0 + 5 = 666.

It is not a de Polignac number, because 55307783257605 - 2¹ = 55307783257603 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55307783257603) 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, 25564116 + ... + 27643074.

It is an arithmetic number, because the mean of its divisors is an integer number (2002662168000).

Almost surely, 2^{55307783257605} is an apocalyptic number.

It is an amenable number.

55307783257605 is a deficient number, since it is larger than the sum of its proper divisors (40820000806395).

55307783257605 is a wasteful number, since it uses less digits than its factorization.

55307783257605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2080578 (or 2080575 counting only the distinct ones).

The product of its (nonzero) digits is 185220000, while the sum is 63.

The spelling of 55307783257605 in words is "fifty-five trillion, three hundred seven billion, seven hundred eighty-three million, two hundred fifty-seven thousand, six hundred five".