61247245065 has 8 divisors (see below), whose sum is σ = 97995592128. Its totient is φ = 32665197360.

The previous prime is 61247245051. The next prime is 61247245097. The reversal of 61247245065 is 56054274216.

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

It is not a de Polignac number, because 61247245065 - 2⁶ = 61247245001 is a prime.

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, 2041574821 + ... + 2041574850.

It is an arithmetic number, because the mean of its divisors is an integer number (12249449016).

Almost surely, 2^61247245065 is an apocalyptic number.

It is an amenable number.

61247245065 is a deficient number, since it is larger than the sum of its proper divisors (36748347063).

61247245065 is a wasteful number, since it uses less digits than its factorization.

61247245065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4083149679.

The product of its (nonzero) digits is 403200, while the sum is 42.

The spelling of 61247245065 in words is "sixty-one billion, two hundred forty-seven million, two hundred forty-five thousand, sixty-five".