40350664561 has 8 divisors (see below), whose sum is σ = 40488882048. Its totient is φ = 40212546000.

The previous prime is 40350664559. The next prime is 40350664577. The reversal of 40350664561 is 16546605304.

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 40350664561 - 2¹ = 40350664559 is a prime.

It is a super-2 number, since 2×40350664561² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40350634561) 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 7 ways as a sum of consecutive naturals, for example, 844296 + ... + 890806.

It is an arithmetic number, because the mean of its divisors is an integer number (5061110256).

Almost surely, 2^40350664561 is an apocalyptic number.

It is an amenable number.

40350664561 is a deficient number, since it is larger than the sum of its proper divisors (138217487).

40350664561 is a wasteful number, since it uses less digits than its factorization.

40350664561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49463.

The product of its (nonzero) digits is 259200, while the sum is 40.

The spelling of 40350664561 in words is "forty billion, three hundred fifty million, six hundred sixty-four thousand, five hundred sixty-one".