61047808650 has 528 divisors, whose sum is σ = 189787138560. Its totient is φ = 14549673600.

The previous prime is 61047808553. The next prime is 61047808667. The reversal of 61047808650 is 5680874016.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 61047808596 and 61047808605.

It is a congruent number.

It is an unprimeable number.

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 263 ways as a sum of consecutive naturals, for example, 1969284135 + ... + 1969284165.

Almost surely, 2^61047808650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61047808650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94893569280).

61047808650 is an abundant number, since it is smaller than the sum of its proper divisors (128739329910).

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

61047808650 is a wasteful number, since it uses less digits than its factorization.

61047808650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125 (or 93 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The spelling of 61047808650 in words is "sixty-one billion, forty-seven million, eight hundred eight thousand, six hundred fifty".