41961721920 has 224 divisors, whose sum is σ = 140918062080. Its totient is φ = 10549647360.

The previous prime is 41961721913. The next prime is 41961721931. The reversal of 41961721920 is 2912716914.

It is a super-2 number, since 2×41961721920² (a number of 22 digits) contains 22 as substring.

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, 3843189 + ... + 3854091.

Almost surely, 2^41961721920 is an apocalyptic number.

41961721920 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 41961721920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70459031040).

41961721920 is an abundant number, since it is smaller than the sum of its proper divisors (98956340160).

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

41961721920 is a wasteful number, since it uses less digits than its factorization.

41961721920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11153 (or 11143 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 42.

The spelling of 41961721920 in words is "forty-one billion, nine hundred sixty-one million, seven hundred twenty-one thousand, nine hundred twenty".