5201466391861 has 8 divisors (see below), whose sum is σ = 5342255073464. Its totient is φ = 5060688684480.

The previous prime is 5201466391843. The next prime is 5201466391873. The reversal of 5201466391861 is 1681936641025.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3654191620836 + 1547274771025 = 1911594^2 + 1243895^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5201466391861 - 2¹³ = 5201466383669 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5201466391799 and 5201466391808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5201466391841) 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, 1778250 + ... + 3683083.

It is an arithmetic number, because the mean of its divisors is an integer number (667781884183).

Almost surely, 2^{5201466391861} is an apocalyptic number.

It is an amenable number.

5201466391861 is a deficient number, since it is larger than the sum of its proper divisors (140788681603).

5201466391861 is a wasteful number, since it uses less digits than its factorization.

5201466391861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5487111.

The product of its (nonzero) digits is 1866240, while the sum is 52.

The spelling of 5201466391861 in words is "five trillion, two hundred one billion, four hundred sixty-six million, three hundred ninety-one thousand, eight hundred sixty-one".