61242216513 has 8 divisors (see below), whose sum is σ = 81719642400. Its totient is φ = 40796467488.

The previous prime is 61242216509. The next prime is 61242216533. The reversal of 61242216513 is 31561224216.

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

It is not a de Polignac number, because 61242216513 - 2² = 61242216509 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61242216533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7914703 + ... + 7922436.

It is an arithmetic number, because the mean of its divisors is an integer number (10214955300).

Almost surely, 2^61242216513 is an apocalyptic number.

It is an amenable number.

61242216513 is a deficient number, since it is larger than the sum of its proper divisors (20477425887).

61242216513 is a wasteful number, since it uses less digits than its factorization.

61242216513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15838431.

The product of its digits is 17280, while the sum is 33.

The spelling of 61242216513 in words is "sixty-one billion, two hundred forty-two million, two hundred sixteen thousand, five hundred thirteen".