61298002836 has 144 divisors (see below), whose sum is σ = 177956932608. Its totient is φ = 17427571200.

The previous prime is 61298002789. The next prime is 61298002867. The reversal of 61298002836 is 63820089216.

61298002836 is a `hidden beast` number, since 612 + 9 + 8 + 0 + 0 + 28 + 3 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 61298002791 and 61298002800.

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 71028541 + ... + 71029403.

It is an arithmetic number, because the mean of its divisors is an integer number (1235812032).

Almost surely, 2^61298002836 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 61298002836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88978466304).

61298002836 is an abundant number, since it is smaller than the sum of its proper divisors (116658929772).

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

61298002836 is a wasteful number, since it uses less digits than its factorization.

61298002836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1942 (or 1937 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 61298002836 in words is "sixty-one billion, two hundred ninety-eight million, two thousand, eight hundred thirty-six".