7423788745538 has 32 divisors (see below), whose sum is σ = 12226950509760. Its totient is φ = 3352529194560.

The previous prime is 7423788745463. The next prime is 7423788745547. The reversal of 7423788745538 is 8355478873247.

It is a super-4 number, since 4×7423788745538⁴ (a number of 53 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (71) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27820433 + ... + 28086011.

It is an arithmetic number, because the mean of its divisors is an integer number (382092203430).

Almost surely, 2^{7423788745538} is an apocalyptic number.

7423788745538 is a deficient number, since it is larger than the sum of its proper divisors (4803161764222).

7423788745538 is a wasteful number, since it uses less digits than its factorization.

7423788745538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273842.

The product of its digits is 1264435200, while the sum is 71.

The spelling of 7423788745538 in words is "seven trillion, four hundred twenty-three billion, seven hundred eighty-eight million, seven hundred forty-five thousand, five hundred thirty-eight".