7138544067 has 16 divisors (see below), whose sum is σ = 10583801760. Its totient is φ = 4755348000.

The previous prime is 7138544053. The next prime is 7138544089. The reversal of 7138544067 is 7604458317.

7138544067 is a `hidden beast` number, since 71 + 3 + 85 + 440 + 67 = 666.

It is not a de Polignac number, because 7138544067 - 2¹⁰ = 7138543043 is a prime.

It is a super-2 number, since 2×7138544067² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7138544027) 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, 66484 + ... + 136737.

It is an arithmetic number, because the mean of its divisors is an integer number (661487610).

Almost surely, 2^7138544067 is an apocalyptic number.

7138544067 is a deficient number, since it is larger than the sum of its proper divisors (3445257693).

7138544067 is a wasteful number, since it uses less digits than its factorization.

7138544067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204531 (or 204525 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 45.

The square root of 7138544067 is about 84489.9051188957. The cubic root of 7138544067 is about 1925.4690770747.

The spelling of 7138544067 in words is "seven billion, one hundred thirty-eight million, five hundred forty-four thousand, sixty-seven".