40668125523 has 16 divisors (see below), whose sum is σ = 55645155456. Its totient is φ = 26405225280.

The previous prime is 40668125507. The next prime is 40668125581. The reversal of 40668125523 is 32552186604.

It is not a de Polignac number, because 40668125523 - 2⁴ = 40668125507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40668125503) 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, 409498 + ... + 499023.

It is an arithmetic number, because the mean of its divisors is an integer number (3477822216).

Almost surely, 2^40668125523 is an apocalyptic number.

40668125523 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

40668125523 is a deficient number, since it is larger than the sum of its proper divisors (14977029933).

40668125523 is a wasteful number, since it uses less digits than its factorization.

40668125523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908914.

The product of its (nonzero) digits is 345600, while the sum is 42.

The spelling of 40668125523 in words is "forty billion, six hundred sixty-eight million, one hundred twenty-five thousand, five hundred twenty-three".