61390047852 has 192 divisors, whose sum is σ = 183173760000. Its totient is φ = 17417410560.

The previous prime is 61390047787. The next prime is 61390047893. The reversal of 61390047852 is 25874009316.

It is a junction number, because it is equal to n+sod(n) for n = 61390047798 and 61390047807.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 123025899 + ... + 123026397.

It is an arithmetic number, because the mean of its divisors is an integer number (954030000).

It is a 1-persistent number, because it is pandigital, but 2⋅61390047852 = 122780095704 is not.

Almost surely, 2^61390047852 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61390047852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91586880000).

61390047852 is an abundant number, since it is smaller than the sum of its proper divisors (121783712148).

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

61390047852 is a wasteful number, since it uses less digits than its factorization.

61390047852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1333 (or 1325 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 61390047852 in words is "sixty-one billion, three hundred ninety million, forty-seven thousand, eight hundred fifty-two".