61310553619 has 8 divisors (see below), whose sum is σ = 70293069920. Its totient is φ = 52384003776.

The previous prime is 61310553613. The next prime is 61310553641. The reversal of 61310553619 is 91635501316.

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 61310553619 - 2¹¹ = 61310551571 is a prime.

It is a super-2 number, since 2×61310553619² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61310553613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13989264 + ... + 13993645.

It is an arithmetic number, because the mean of its divisors is an integer number (8786633740).

Almost surely, 2^61310553619 is an apocalyptic number.

61310553619 is a deficient number, since it is larger than the sum of its proper divisors (8982516301).

61310553619 is a wasteful number, since it uses less digits than its factorization.

61310553619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27983229.

The product of its (nonzero) digits is 72900, while the sum is 40.

The spelling of 61310553619 in words is "sixty-one billion, three hundred ten million, five hundred fifty-three thousand, six hundred nineteen".