41647641840 has 240 divisors, whose sum is σ = 159962190336. Its totient is φ = 9512640000.

The previous prime is 41647641821. The next prime is 41647641877. The reversal of 41647641840 is 4814674614.

41647641840 is a `hidden beast` number, since 4 + 164 + 76 + 418 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11343205 + ... + 11346875.

Almost surely, 2^41647641840 is an apocalyptic number.

41647641840 is a gapful number since it is divisible by the number (40) 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 41647641840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79981095168).

41647641840 is an abundant number, since it is smaller than the sum of its proper divisors (118314548496).

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

41647641840 is a wasteful number, since it uses less digits than its factorization.

41647641840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5948 (or 5939 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 45.

The spelling of 41647641840 in words is "forty-one billion, six hundred forty-seven million, six hundred forty-one thousand, eight hundred forty".