5267126016661 has 4 divisors (see below), whose sum is σ = 5321426284972. Its totient is φ = 5212825748352.

The previous prime is 5267126016587. The next prime is 5267126016689. The reversal of 5267126016661 is 1666106217625.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2869060068900 + 2398065947761 = 1693830^2 + 1548569^2 .

It is a cyclic number.

It is not a de Polignac number, because 5267126016661 - 2²¹ = 5267123919509 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 (5267126013661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27150134010 + ... + 27150134203.

It is an arithmetic number, because the mean of its divisors is an integer number (1330356571243).

Almost surely, 2^{5267126016661} is an apocalyptic number.

It is an amenable number.

5267126016661 is a deficient number, since it is larger than the sum of its proper divisors (54300268311).

5267126016661 is an equidigital number, since it uses as much as digits as its factorization.

5267126016661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54300268310.

The product of its (nonzero) digits is 1088640, while the sum is 49.

The spelling of 5267126016661 in words is "five trillion, two hundred sixty-seven billion, one hundred twenty-six million, sixteen thousand, six hundred sixty-one".