61719336252 has 72 divisors (see below), whose sum is σ = 179100020736. Its totient is φ = 17555003424.

The previous prime is 61719336233. The next prime is 61719336257. The reversal of 61719336252 is 25263391716.

61719336252 is a `hidden beast` number, since 6 + 1 + 7 + 19 + 3 + 3 + 625 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 61719336198 and 61719336207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61719336257) 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 23 ways as a sum of consecutive naturals, for example, 492948 + ... + 605339.

It is an arithmetic number, because the mean of its divisors is an integer number (2487500288).

Almost surely, 2^61719336252 is an apocalyptic number.

It is an amenable number.

61719336252 is an abundant number, since it is smaller than the sum of its proper divisors (117380684484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61719336252 is a wasteful number, since it uses less digits than its factorization.

61719336252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1098527 (or 1098522 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The spelling of 61719336252 in words is "sixty-one billion, seven hundred nineteen million, three hundred thirty-six thousand, two hundred fifty-two".