61765424609 has 8 divisors (see below), whose sum is σ = 70658202048. Its totient is φ = 52889933520.

The previous prime is 61765424587. The next prime is 61765424653. The reversal of 61765424609 is 90642456716.

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 61765424609 - 2¹² = 61765420513 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61765424659) 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, 4313927 + ... + 4328220.

It is an arithmetic number, because the mean of its divisors is an integer number (8832275256).

Almost surely, 2^61765424609 is an apocalyptic number.

It is an amenable number.

61765424609 is a deficient number, since it is larger than the sum of its proper divisors (8892777439).

61765424609 is a wasteful number, since it uses less digits than its factorization.

61765424609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8643175.

The product of its (nonzero) digits is 2177280, while the sum is 50.

The spelling of 61765424609 in words is "sixty-one billion, seven hundred sixty-five million, four hundred twenty-four thousand, six hundred nine".