75552139547 has 2 divisors, whose sum is σ = 75552139548. Its totient is φ = 75552139546.

The previous prime is 75552139477. The next prime is 75552139549. The reversal of 75552139547 is 74593125557.

It is a strong prime.

It is an emirp because it is prime and its reverse (74593125557) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75552139547 is a prime.

It is a super-2 number, since 2×75552139547² (a number of 23 digits) contains 22 as substring.

Together with 75552139549, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (75552139549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37776069773 + 37776069774.

It is an arithmetic number, because the mean of its divisors is an integer number (37776069774).

Almost surely, 2^75552139547 is an apocalyptic number.

75552139547 is a deficient number, since it is larger than the sum of its proper divisors (1).

75552139547 is an equidigital number, since it uses as much as digits as its factorization.

75552139547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6615000, while the sum is 53.

The spelling of 75552139547 in words is "seventy-five billion, five hundred fifty-two million, one hundred thirty-nine thousand, five hundred forty-seven".