75556223047 has 2 divisors, whose sum is σ = 75556223048. Its totient is φ = 75556223046.

The previous prime is 75556223003. The next prime is 75556223051. The reversal of 75556223047 is 74032265557.

It is a strong prime.

It is an emirp because it is prime and its reverse (74032265557) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75556223047 is a prime.

It is a super-2 number, since 2×75556223047² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 75556222988 and 75556223006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75556223447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37778111523 + 37778111524.

It is an arithmetic number, because the mean of its divisors is an integer number (37778111524).

Almost surely, 2^75556223047 is an apocalyptic number.

75556223047 is a deficient number, since it is larger than the sum of its proper divisors (1).

75556223047 is an equidigital number, since it uses as much as digits as its factorization.

75556223047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1764000, while the sum is 46.

The spelling of 75556223047 in words is "seventy-five billion, five hundred fifty-six million, two hundred twenty-three thousand, forty-seven".