61281716461 has 8 divisors (see below), whose sum is σ = 70038950400. Its totient is φ = 52525158288.

The previous prime is 61281716407. The next prime is 61281716477. The reversal of 61281716461 is 16461718216.

61281716461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 61281716461 - 2⁷ = 61281716333 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 (61281716401) 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, 43140 + ... + 352738.

It is an arithmetic number, because the mean of its divisors is an integer number (8754868800).

Almost surely, 2^61281716461 is an apocalyptic number.

It is an amenable number.

61281716461 is a deficient number, since it is larger than the sum of its proper divisors (8757233939).

61281716461 is a wasteful number, since it uses less digits than its factorization.

61281716461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337883.

The product of its digits is 96768, while the sum is 43.

The spelling of 61281716461 in words is "sixty-one billion, two hundred eighty-one million, seven hundred sixteen thousand, four hundred sixty-one".