40843637016 has 128 divisors (see below), whose sum is σ = 125955648000. Its totient is φ = 10747699200.

The previous prime is 40843636963. The next prime is 40843637027. The reversal of 40843637016 is 61073634804.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 959791 + ... + 1001441.

It is an arithmetic number, because the mean of its divisors is an integer number (984028500).

Almost surely, 2^40843637016 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 40843637016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62977824000).

40843637016 is an abundant number, since it is smaller than the sum of its proper divisors (85112010984).

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

40843637016 is a wasteful number, since it uses less digits than its factorization.

40843637016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42129 (or 42125 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 42.

The spelling of 40843637016 in words is "forty billion, eight hundred forty-three million, six hundred thirty-seven thousand, sixteen".