40011000166523 has 16 divisors (see below), whose sum is σ = 41677859931840. Its totient is φ = 38375131939200.

The previous prime is 40011000166519. The next prime is 40011000166531. The reversal of 40011000166523 is 32566100011004.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 40011000166523 - 2² = 40011000166519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40011000166223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15118433 + ... + 17566701.

It is an arithmetic number, because the mean of its divisors is an integer number (2604866245740).

Almost surely, 2^{40011000166523} is an apocalyptic number.

40011000166523 is a deficient number, since it is larger than the sum of its proper divisors (1666859765317).

40011000166523 is a wasteful number, since it uses less digits than its factorization.

40011000166523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2454598.

The product of its (nonzero) digits is 4320, while the sum is 29.

Adding to 40011000166523 its reverse (32566100011004), we get a palindrome (72577100177527).

The spelling of 40011000166523 in words is "forty trillion, eleven billion, one hundred sixty-six thousand, five hundred twenty-three".