39494782656 has 224 divisors, whose sum is σ = 134677383680. Its totient is φ = 11115574272.

The previous prime is 39494782651. The next prime is 39494782673. The reversal of 39494782656 is 65628749493.

39494782656 is a `hidden beast` number, since 3 + 9 + 494 + 7 + 82 + 65 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 39494782593 and 39494782602.

It is not an unprimeable number, because it can be changed into a prime (39494782651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 786066 + ... + 834798.

It is an arithmetic number, because the mean of its divisors is an integer number (601238320).

Almost surely, 2^39494782656 is an apocalyptic number.

39494782656 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39494782656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67338691840).

39494782656 is an abundant number, since it is smaller than the sum of its proper divisors (95182601024).

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

39494782656 is a wasteful number, since it uses less digits than its factorization.

39494782656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48828 (or 48812 counting only the distinct ones).

The product of its digits is 78382080, while the sum is 63.

The spelling of 39494782656 in words is "thirty-nine billion, four hundred ninety-four million, seven hundred eighty-two thousand, six hundred fifty-six".