61281716460 has 24 divisors (see below), whose sum is σ = 171588806256. Its totient is φ = 16341791040.

The previous prime is 61281716407. The next prime is 61281716477. The reversal of 61281716460 is 6461718216.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 510680911 + ... + 510681030.

It is an arithmetic number, because the mean of its divisors is an integer number (7149533594).

Almost surely, 2^61281716460 is an apocalyptic number.

61281716460 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61281716460 is an abundant number, since it is smaller than the sum of its proper divisors (110307089796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61281716460 is a wasteful number, since it uses less digits than its factorization.

61281716460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021361953 (or 1021361951 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The spelling of 61281716460 in words is "sixty-one billion, two hundred eighty-one million, seven hundred sixteen thousand, four hundred sixty".