41397785856 has 360 divisors, whose sum is σ = 141686973120. Its totient is φ = 11776720896.

The previous prime is 41397785851. The next prime is 41397785887. The reversal of 41397785856 is 65858779314.

41397785856 is a `hidden beast` number, since 41 + 3 + 9 + 7 + 7 + 8 + 585 + 6 = 666.

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 = 41397785793 and 41397785802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41397785851) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 44561200 + ... + 44562128.

Almost surely, 2^41397785856 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 41397785856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70843486560).

41397785856 is an abundant number, since it is smaller than the sum of its proper divisors (100289187264).

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

41397785856 is an equidigital number, since it uses as much as digits as its factorization.

41397785856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1271 (or 1248 counting only the distinct ones).

The product of its digits is 50803200, while the sum is 63.

The spelling of 41397785856 in words is "forty-one billion, three hundred ninety-seven million, seven hundred eighty-five thousand, eight hundred fifty-six".