40040166537 has 32 divisors (see below), whose sum is σ = 67844616960. Its totient is φ = 22862632320.

The previous prime is 40040166511. The next prime is 40040166557. The reversal of 40040166537 is 73566104004.

It is a happy number.

40040166537 is a `hidden beast` number, since 400 + 40 + 166 + 53 + 7 = 666.

It is not a de Polignac number, because 40040166537 - 2⁶ = 40040166473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40040166557) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 169483 + ... + 329855.

It is an arithmetic number, because the mean of its divisors is an integer number (2120144280).

Almost surely, 2^40040166537 is an apocalyptic number.

It is an amenable number.

40040166537 is a deficient number, since it is larger than the sum of its proper divisors (27804450423).

40040166537 is a wasteful number, since it uses less digits than its factorization.

40040166537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161710 (or 161704 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The spelling of 40040166537 in words is "forty billion, forty million, one hundred sixty-six thousand, five hundred thirty-seven".