40644082061 has 8 divisors (see below), whose sum is σ = 44346403584. Its totient is φ = 36942994720.

The previous prime is 40644082019. The next prime is 40644082067. The reversal of 40644082061 is 16028044604.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40644082061 - 2⁶ = 40644081997 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 (40644082067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239000 + ... + 372033.

It is an arithmetic number, because the mean of its divisors is an integer number (5543300448).

Almost surely, 2^40644082061 is an apocalyptic number.

It is an amenable number.

40644082061 is a deficient number, since it is larger than the sum of its proper divisors (3702321523).

40644082061 is a wasteful number, since it uses less digits than its factorization.

40644082061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617091.

The product of its (nonzero) digits is 36864, while the sum is 35.

The spelling of 40644082061 in words is "forty billion, six hundred forty-four million, eighty-two thousand, sixty-one".