61719144901 has 8 divisors (see below), whose sum is σ = 63008496000. Its totient is φ = 60441462480.

The previous prime is 61719144871. The next prime is 61719144989. The reversal of 61719144901 is 10944191716.

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 61719144901 - 2⁵ = 61719144869 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 (61719144601) 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, 2906481 + ... + 2927638.

It is an arithmetic number, because the mean of its divisors is an integer number (7876062000).

Almost surely, 2^61719144901 is an apocalyptic number.

It is an amenable number.

61719144901 is a deficient number, since it is larger than the sum of its proper divisors (1289351099).

61719144901 is a wasteful number, since it uses less digits than its factorization.

61719144901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5834339.

The product of its (nonzero) digits is 54432, while the sum is 43.

The spelling of 61719144901 in words is "sixty-one billion, seven hundred nineteen million, one hundred forty-four thousand, nine hundred one".