61148450899 has 8 divisors (see below), whose sum is σ = 64370170880. Its totient is φ = 57927069000.

The previous prime is 61148450893. The next prime is 61148450911. The reversal of 61148450899 is 99805484116.

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 61148450899 - 2¹⁹ = 61147926611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61148450893) 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, 341974 + ... + 489124.

It is an arithmetic number, because the mean of its divisors is an integer number (8046271360).

Almost surely, 2^61148450899 is an apocalyptic number.

61148450899 is a deficient number, since it is larger than the sum of its proper divisors (3221719981).

61148450899 is a wasteful number, since it uses less digits than its factorization.

61148450899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169041.

The product of its (nonzero) digits is 2488320, while the sum is 55.

The spelling of 61148450899 in words is "sixty-one billion, one hundred forty-eight million, four hundred fifty thousand, eight hundred ninety-nine".