61724602461 has 8 divisors (see below), whose sum is σ = 82300667904. Its totient is φ = 41149136000.

The previous prime is 61724602393. The next prime is 61724602627. The reversal of 61724602461 is 16420642716.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61724602461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61724602361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223885 + ... + 416621.

It is an arithmetic number, because the mean of its divisors is an integer number (10287583488).

Almost surely, 2^61724602461 is an apocalyptic number.

It is an amenable number.

61724602461 is a deficient number, since it is larger than the sum of its proper divisors (20576065443).

61724602461 is a wasteful number, since it uses less digits than its factorization.

61724602461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299491.

The product of its (nonzero) digits is 96768, while the sum is 39.

The spelling of 61724602461 in words is "sixty-one billion, seven hundred twenty-four million, six hundred two thousand, four hundred sixty-one".