7138400467685 has 16 divisors (see below), whose sum is σ = 8861965110000. Its totient is φ = 5513486340096.

The previous prime is 7138400467663. The next prime is 7138400467691. The reversal of 7138400467685 is 5867640048317.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 3005254543489 + 4133145924196 = 1733567^2 + 2033014^2 .

It is not a de Polignac number, because 7138400467685 - 2⁶ = 7138400467621 is a prime.

It is a super-2 number, since 2×7138400467685² (a number of 27 digits) contains 22 as substring.

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, 1186757 + ... + 3960453.

It is an arithmetic number, because the mean of its divisors is an integer number (553872819375).

Almost surely, 2^{7138400467685} is an apocalyptic number.

It is an amenable number.

7138400467685 is a deficient number, since it is larger than the sum of its proper divisors (1723564642315).

7138400467685 is a wasteful number, since it uses less digits than its factorization.

7138400467685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2791480.

The product of its (nonzero) digits is 27095040, while the sum is 59.

The spelling of 7138400467685 in words is "seven trillion, one hundred thirty-eight billion, four hundred million, four hundred sixty-seven thousand, six hundred eighty-five".