747647655487 has 2 divisors, whose sum is σ = 747647655488. Its totient is φ = 747647655486.

The previous prime is 747647655437. The next prime is 747647655563. The reversal of 747647655487 is 784556746747.

It is a weak prime.

It is an emirp because it is prime and its reverse (784556746747) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 747647655487 - 2¹⁹ = 747647131199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (747647655437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 373823827743 + 373823827744.

It is an arithmetic number, because the mean of its divisors is an integer number (373823827744).

Almost surely, 2^747647655487 is an apocalyptic number.

747647655487 is a deficient number, since it is larger than the sum of its proper divisors (1).

747647655487 is an equidigital number, since it uses as much as digits as its factorization.

747647655487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1106380800, while the sum is 70.

The spelling of 747647655487 in words is "seven hundred forty-seven billion, six hundred forty-seven million, six hundred fifty-five thousand, four hundred eighty-seven".