61315449299 has 8 divisors (see below), whose sum is σ = 66827590032. Its totient is φ = 55916961120.

The previous prime is 61315449281. The next prime is 61315449311. The reversal of 61315449299 is 99294451316.

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 61315449299 - 2¹² = 61315445203 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61315449299.

It is not an unprimeable number, because it can be changed into a prime (61315449229) 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, 28412012 + ... + 28414169.

It is an arithmetic number, because the mean of its divisors is an integer number (8353448754).

Almost surely, 2^61315449299 is an apocalyptic number.

61315449299 is a deficient number, since it is larger than the sum of its proper divisors (5512140733).

61315449299 is a wasteful number, since it uses less digits than its factorization.

61315449299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56826277.

The product of its digits is 2099520, while the sum is 53.

The spelling of 61315449299 in words is "sixty-one billion, three hundred fifteen million, four hundred forty-nine thousand, two hundred ninety-nine".