747647655563 has 2 divisors, whose sum is σ = 747647655564. Its totient is φ = 747647655562.

The previous prime is 747647655487. The next prime is 747647655619. The reversal of 747647655563 is 365556746747.

It is a strong prime.

It is an emirp because it is prime and its reverse (365556746747) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 747647655563 - 2²² = 747643461259 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 747647655563.

It is not a weakly prime, because it can be changed into another prime (747647655863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 373823827781 + 373823827782.

It is an arithmetic number, because the mean of its divisors is an integer number (373823827782).

Almost surely, 2^747647655563 is an apocalyptic number.

747647655563 is a deficient number, since it is larger than the sum of its proper divisors (1).

747647655563 is an equidigital number, since it uses as much as digits as its factorization.

747647655563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 444528000, while the sum is 65.

The spelling of 747647655563 in words is "seven hundred forty-seven billion, six hundred forty-seven million, six hundred fifty-five thousand, five hundred sixty-three".