40011323534 has 32 divisors (see below), whose sum is σ = 75119063040. Its totient is φ = 15560368992.

The previous prime is 40011323509. The next prime is 40011323543. The reversal of 40011323534 is 43532311004.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1852334 + ... + 1873809.

It is an arithmetic number, because the mean of its divisors is an integer number (2347470720).

Almost surely, 2^40011323534 is an apocalyptic number.

40011323534 is a deficient number, since it is larger than the sum of its proper divisors (35107739506).

40011323534 is a wasteful number, since it uses less digits than its factorization.

40011323534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3726224.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 40011323534 its reverse (43532311004), we get a palindrome (83543634538).

The spelling of 40011323534 in words is "forty billion, eleven million, three hundred twenty-three thousand, five hundred thirty-four".