55766746603665 has 32 divisors (see below), whose sum is σ = 99144655776000. Its totient is φ = 29741132977920.

The previous prime is 55766746603661. The next prime is 55766746603699. The reversal of 55766746603665 is 56630664766755.

55766746603665 is a `hidden beast` number, since 5 + 5 + 7 + 6 + 6 + 7 + 4 + 6 + 603 + 6 + 6 + 5 = 666.

It is not a de Polignac number, because 55766746603665 - 2² = 55766746603661 is a prime.

It is a Smith number, since the sum of its digits (72) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 55766746603593 and 55766746603602.

It is not an unprimeable number, because it can be changed into a prime (55766746603661) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4293765 + ... + 11400434.

It is an arithmetic number, because the mean of its divisors is an integer number (3098270493000).

Almost surely, 2^{55766746603665} is an apocalyptic number.

It is an amenable number.

55766746603665 is a deficient number, since it is larger than the sum of its proper divisors (43377909172335).

55766746603665 is a wasteful number, since it uses less digits than its factorization.

55766746603665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15720534 (or 15720528 counting only the distinct ones).

The product of its (nonzero) digits is 3429216000, while the sum is 72.

The spelling of 55766746603665 in words is "fifty-five trillion, seven hundred sixty-six billion, seven hundred forty-six million, six hundred three thousand, six hundred sixty-five".