40661420511 has 8 divisors (see below), whose sum is σ = 54223889584. Its totient is φ = 27103282560.

The previous prime is 40661420363. The next prime is 40661420563. The reversal of 40661420511 is 11502416604.

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

It is not a de Polignac number, because 40661420511 - 2¹¹ = 40661418463 is a prime.

It is a super-2 number, since 2×40661420511² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40661410511) 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, 1060810 + ... + 1098471.

It is an arithmetic number, because the mean of its divisors is an integer number (6777986198).

Almost surely, 2^40661420511 is an apocalyptic number.

40661420511 is a deficient number, since it is larger than the sum of its proper divisors (13562469073).

40661420511 is a wasteful number, since it uses less digits than its factorization.

40661420511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2165561.

The product of its (nonzero) digits is 5760, while the sum is 30.

The spelling of 40661420511 in words is "forty billion, six hundred sixty-one million, four hundred twenty thousand, five hundred eleven".