55105603787678 has 16 divisors (see below), whose sum is σ = 83587544326080. Its totient is φ = 27243091920000.

The previous prime is 55105603787671. The next prime is 55105603787713. The reversal of 55105603787678 is 87678730650155.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55105603787671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45531578 + ... + 46726178.

It is an arithmetic number, because the mean of its divisors is an integer number (5224221520380).

Almost surely, 2^{55105603787678} is an apocalyptic number.

55105603787678 is a deficient number, since it is larger than the sum of its proper divisors (28481940538402).

55105603787678 is a wasteful number, since it uses less digits than its factorization.

55105603787678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1453843.

The product of its (nonzero) digits is 296352000, while the sum is 68.

The spelling of 55105603787678 in words is "fifty-five trillion, one hundred five billion, six hundred three million, seven hundred eighty-seven thousand, six hundred seventy-eight".