41643541640 has 64 divisors (see below), whose sum is σ = 94311993600. Its totient is φ = 16548593152.

The previous prime is 41643541633. The next prime is 41643541657. The reversal of 41643541640 is 4614534614.

It is a junction number, because it is equal to n+sod(n) for n = 41643541594 and 41643541603.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4230164 + ... + 4239996.

It is an arithmetic number, because the mean of its divisors is an integer number (1473624900).

Almost surely, 2^41643541640 is an apocalyptic number.

41643541640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

41643541640 is an abundant number, since it is smaller than the sum of its proper divisors (52668451960).

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

41643541640 is a wasteful number, since it uses less digits than its factorization.

41643541640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10526 (or 10522 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 38.

The spelling of 41643541640 in words is "forty-one billion, six hundred forty-three million, five hundred forty-one thousand, six hundred forty".