61684498508533 has 4 divisors (see below), whose sum is σ = 61751619835360. Its totient is φ = 61617377181708.

The previous prime is 61684498508519. The next prime is 61684498508557. The reversal of 61684498508533 is 33580589448616.

It is a happy number.

61684498508533 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61684498508533 - 2⁹ = 61684498508021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61684498508593) 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 3 ways as a sum of consecutive naturals, for example, 33560662035 + ... + 33560663872.

It is an arithmetic number, because the mean of its divisors is an integer number (15437904958840).

Almost surely, 2^{61684498508533} is an apocalyptic number.

It is an amenable number.

61684498508533 is a deficient number, since it is larger than the sum of its proper divisors (67121326827).

61684498508533 is an equidigital number, since it uses as much as digits as its factorization.

61684498508533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67121326826.

The product of its (nonzero) digits is 597196800, while the sum is 70.

The spelling of 61684498508533 in words is "sixty-one trillion, six hundred eighty-four billion, four hundred ninety-eight million, five hundred eight thousand, five hundred thirty-three".