4547720263681 has 16 divisors (see below), whose sum is σ = 5208465328128. Its totient is φ = 3889751720400.

The previous prime is 4547720263633. The next prime is 4547720263693. The reversal of 4547720263681 is 1863620277454.

It is not a de Polignac number, because 4547720263681 - 2²⁹ = 4547183392769 is a prime.

It is a super-2 number, since 2×4547720263681² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4547720263621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5824846 + ... + 6559288.

It is an arithmetic number, because the mean of its divisors is an integer number (325529083008).

Almost surely, 2^{4547720263681} is an apocalyptic number.

It is an amenable number.

4547720263681 is a deficient number, since it is larger than the sum of its proper divisors (660745064447).

4547720263681 is an equidigital number, since it uses as much as digits as its factorization.

4547720263681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736332.

The product of its (nonzero) digits is 13547520, while the sum is 55.

The spelling of 4547720263681 in words is "four trillion, five hundred forty-seven billion, seven hundred twenty million, two hundred sixty-three thousand, six hundred eighty-one".