40406105529 has 80 divisors (see below), whose sum is σ = 67583932416. Its totient is φ = 23935564800.

The previous prime is 40406105513. The next prime is 40406105543. The reversal of 40406105529 is 92550160404.

40406105529 is a `hidden beast` number, since 4 + 0 + 40 + 61 + 0 + 552 + 9 = 666.

40406105529 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40406105529 - 2⁴ = 40406105513 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40406105493 and 40406105502.

It is not an unprimeable number, because it can be changed into a prime (40406100529) 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, 1738624 + ... + 1761710.

Almost surely, 2^40406105529 is an apocalyptic number.

It is an amenable number.

40406105529 is a deficient number, since it is larger than the sum of its proper divisors (27177826887).

40406105529 is a wasteful number, since it uses less digits than its factorization.

40406105529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23188 (or 23179 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 40406105529 in words is "forty billion, four hundred six million, one hundred five thousand, five hundred twenty-nine".