61466466417 has 4 divisors (see below), whose sum is σ = 81955288560. Its totient is φ = 40977644276.

The previous prime is 61466466407. The next prime is 61466466427. The reversal of 61466466417 is 71466466416.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (61466466407) and next prime (61466466427).

It is a cyclic number.

It is not a de Polignac number, because 61466466417 - 2¹⁶ = 61466400881 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61466466417.

It is not an unprimeable number, because it can be changed into a prime (61466466407) 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, 10244411067 + ... + 10244411072.

It is an arithmetic number, because the mean of its divisors is an integer number (20488822140).

Almost surely, 2^61466466417 is an apocalyptic number.

It is an amenable number.

61466466417 is a deficient number, since it is larger than the sum of its proper divisors (20488822143).

61466466417 is a wasteful number, since it uses less digits than its factorization.

61466466417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20488822142.

The product of its digits is 3483648, while the sum is 51.

Subtracting 61466466417 from its reverse (71466466416), we obtain a palindrome (9999999999).

The spelling of 61466466417 in words is "sixty-one billion, four hundred sixty-six million, four hundred sixty-six thousand, four hundred seventeen".