5390766661 has 16 divisors (see below), whose sum is σ = 6380605440. Its totient is φ = 4458630960.

The previous prime is 5390766649. The next prime is 5390766677. The reversal of 5390766661 is 1666670935.

It is not a de Polignac number, because 5390766661 - 2⁹ = 5390766149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5390766061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92031 + ... + 138748.

It is an arithmetic number, because the mean of its divisors is an integer number (398787840).

Almost surely, 2^5390766661 is an apocalyptic number.

It is an amenable number.

5390766661 is a deficient number, since it is larger than the sum of its proper divisors (989838779).

5390766661 is a wasteful number, since it uses less digits than its factorization.

5390766661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230904.

The product of its (nonzero) digits is 1224720, while the sum is 49.

The square root of 5390766661 is about 73421.8404904154. The cubic root of 5390766661 is about 1753.4101299771.

The spelling of 5390766661 in words is "five billion, three hundred ninety million, seven hundred sixty-six thousand, six hundred sixty-one".