40206460437 has 36 divisors (see below), whose sum is σ = 68746056652. Its totient is φ = 22493116800.

The previous prime is 40206460391. The next prime is 40206460447. The reversal of 40206460437 is 73406460204.

40206460437 is a `hidden beast` number, since 4 + 0 + 2 + 0 + 646 + 0 + 4 + 3 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5047960401 + 35158500036 = 71049^2 + 187506^2 .

It is not a de Polignac number, because 40206460437 - 2⁶ = 40206460373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40206460447) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1405864 + ... + 1434177.

Almost surely, 2^40206460437 is an apocalyptic number.

It is an amenable number.

40206460437 is a deficient number, since it is larger than the sum of its proper divisors (28539596215).

40206460437 is a wasteful number, since it uses less digits than its factorization.

40206460437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2840082 (or 2840068 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 36.

The spelling of 40206460437 in words is "forty billion, two hundred six million, four hundred sixty thousand, four hundred thirty-seven".