4775881373641 has 9 divisors (see below), whose sum is σ = 5555634903399. Its totient is φ = 4093599493704.

The previous prime is 4775881373639. The next prime is 4775881373647. The reversal of 4775881373641 is 1463731885774.

The square root of 4775881373641 is 2185379.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2161826199225 + 2614055174416 = 1470315^2 + 1616804^2 .

It is not a de Polignac number, because 4775881373641 - 2¹ = 4775881373639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4775881373647) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 15141555 + ... + 15453751.

Almost surely, 2^{4775881373641} is an apocalyptic number.

4775881373641 is the 2185379-th square number.

4775881373641 is the 1092690-th centered octagonal number.

It is an amenable number.

4775881373641 is a deficient number, since it is larger than the sum of its proper divisors (779753529758).

4775881373641 is an frugal number, since it uses more digits than its factorization.

4775881373641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624408 (or 312204 counting only the distinct ones).

The product of its digits is 94832640, while the sum is 64.

Multiplying 4775881373641 by its sum of digits (64), we get a square (305656407913024 = 17483032²).

The spelling of 4775881373641 in words is "four trillion, seven hundred seventy-five billion, eight hundred eighty-one million, three hundred seventy-three thousand, six hundred forty-one".