41440356661 has 16 divisors (see below), whose sum is σ = 45682999488. Its totient is φ = 37277392000.

The previous prime is 41440356653. The next prime is 41440356677. The reversal of 41440356661 is 16665304414.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 41440356661 - 2³ = 41440356653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41440356611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1974921 + ... + 1995793.

It is an arithmetic number, because the mean of its divisors is an integer number (2855187468).

Almost surely, 2^41440356661 is an apocalyptic number.

It is an amenable number.

41440356661 is a deficient number, since it is larger than the sum of its proper divisors (4242642827).

41440356661 is a wasteful number, since it uses less digits than its factorization.

41440356661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22772.

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 41440356661 in words is "forty-one billion, four hundred forty million, three hundred fifty-six thousand, six hundred sixty-one".