7131138540406 has 16 divisors (see below), whose sum is σ = 11261144450160. Its totient is φ = 3377472124320.

The previous prime is 7131138540403. The next prime is 7131138540467. The reversal of 7131138540406 is 6040458311317.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7131138540401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11801505 + ... + 12391036.

It is an arithmetic number, because the mean of its divisors is an integer number (703821528135).

Almost surely, 2^{7131138540406} is an apocalyptic number.

7131138540406 is a deficient number, since it is larger than the sum of its proper divisors (4130005909754).

7131138540406 is a wasteful number, since it uses less digits than its factorization.

7131138540406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24200319.

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 7131138540406 in words is "seven trillion, one hundred thirty-one billion, one hundred thirty-eight million, five hundred forty thousand, four hundred six".