41997939816 has 128 divisors (see below), whose sum is σ = 127121114880. Its totient is φ = 11287474176.

The previous prime is 41997939811. The next prime is 41997939839. The reversal of 41997939816 is 61893979914.

It is a super-2 number, since 2×41997939816² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (66) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (41997939811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8442706 + ... + 8447678.

It is an arithmetic number, because the mean of its divisors is an integer number (993133710).

Almost surely, 2^41997939816 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 41997939816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63560557440).

41997939816 is an abundant number, since it is smaller than the sum of its proper divisors (85123175064).

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

41997939816 is a wasteful number, since it uses less digits than its factorization.

41997939816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7963 (or 7959 counting only the distinct ones).

The product of its digits is 26453952, while the sum is 66.

The spelling of 41997939816 in words is "forty-one billion, nine hundred ninety-seven million, nine hundred thirty-nine thousand, eight hundred sixteen".