55666011650667 has 32 divisors (see below), whose sum is σ = 81126768712704. Its totient is φ = 33671177971200.

The previous prime is 55666011650647. The next prime is 55666011650671. The reversal of 55666011650667 is 76605611066655.

It is not a de Polignac number, because 55666011650667 - 2⁶ = 55666011650603 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55666011650667.

It is not an unprimeable number, because it can be changed into a prime (55666011650647) 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, 49328403 + ... + 50444259.

It is an arithmetic number, because the mean of its divisors is an integer number (2535211522272).

Almost surely, 2^{55666011650667} is an apocalyptic number.

55666011650667 is a deficient number, since it is larger than the sum of its proper divisors (25460757062037).

55666011650667 is a wasteful number, since it uses less digits than its factorization.

55666011650667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1118819.

The product of its (nonzero) digits is 40824000, while the sum is 60.

The spelling of 55666011650667 in words is "fifty-five trillion, six hundred sixty-six billion, eleven million, six hundred fifty thousand, six hundred sixty-seven".