42791164650 has 192 divisors, whose sum is σ = 131081610240. Its totient is φ = 10193299200.

The previous prime is 42791164639. The next prime is 42791164679. The reversal of 42791164650 is 5646119724.

42791164650 is a `hidden beast` number, since 4 + 2 + 79 + 116 + 465 + 0 = 666.

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 = 42791164596 and 42791164605.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 504724 + ... + 583376.

It is an arithmetic number, because the mean of its divisors is an integer number (682716720).

Almost surely, 2^42791164650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42791164650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65540805120).

42791164650 is an abundant number, since it is smaller than the sum of its proper divisors (88290445590).

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

42791164650 is a wasteful number, since it uses less digits than its factorization.

42791164650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78718 (or 78707 counting only the distinct ones).

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

The spelling of 42791164650 in words is "forty-two billion, seven hundred ninety-one million, one hundred sixty-four thousand, six hundred fifty".