40040601523 has 4 divisors (see below), whose sum is σ = 43120647808. Its totient is φ = 36960555240.

The previous prime is 40040601521. The next prime is 40040601563. The reversal of 40040601523 is 32510604004.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40040601523 - 2¹ = 40040601521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40040601521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1540023123 + ... + 1540023148.

It is an arithmetic number, because the mean of its divisors is an integer number (10780161952).

Almost surely, 2^40040601523 is an apocalyptic number.

40040601523 is a deficient number, since it is larger than the sum of its proper divisors (3080046285).

40040601523 is a wasteful number, since it uses less digits than its factorization.

40040601523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3080046284.

The product of its (nonzero) digits is 2880, while the sum is 25.

The spelling of 40040601523 in words is "forty billion, forty million, six hundred one thousand, five hundred twenty-three".