61453349619 has 8 divisors (see below), whose sum is σ = 83681157120. Its totient is φ = 40097220936.

The previous prime is 61453349603. The next prime is 61453349651. The reversal of 61453349619 is 91694335416.

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

It is not a de Polignac number, because 61453349619 - 2⁴ = 61453349603 is a prime.

It is a super-2 number, since 2×61453349619² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61453349119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217919539 + ... + 217919820.

It is an arithmetic number, because the mean of its divisors is an integer number (10460144640).

Almost surely, 2^61453349619 is an apocalyptic number.

61453349619 is a deficient number, since it is larger than the sum of its proper divisors (22227807501).

61453349619 is a wasteful number, since it uses less digits than its factorization.

61453349619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435839409.

The product of its digits is 2099520, while the sum is 51.

The spelling of 61453349619 in words is "sixty-one billion, four hundred fifty-three million, three hundred forty-nine thousand, six hundred nineteen".