40161460905 has 80 divisors (see below), whose sum is σ = 73497934224. Its totient is φ = 20974878720.

The previous prime is 40161460901. The next prime is 40161460949. The reversal of 40161460905 is 50906416104.

40161460905 is a `hidden beast` number, since 40 + 1 + 6 + 1 + 4 + 609 + 0 + 5 = 666.

40161460905 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 16431906969 + 23729553936 = 128187^2 + 154044^2 .

It is not a de Polignac number, because 40161460905 - 2² = 40161460901 is a prime.

It is a super-2 number, since 2×40161460905² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40161460905.

It is not an unprimeable number, because it can be changed into a prime (40161460901) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 5752777 + ... + 5759753.

Almost surely, 2^40161460905 is an apocalyptic number.

40161460905 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40161460905 is a deficient number, since it is larger than the sum of its proper divisors (33336473319).

40161460905 is a wasteful number, since it uses less digits than its factorization.

40161460905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7288 (or 7279 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The spelling of 40161460905 in words is "forty billion, one hundred sixty-one million, four hundred sixty thousand, nine hundred five".