63775148641 has 4 divisors (see below), whose sum is σ = 64233962800. Its totient is φ = 63316334484.

The previous prime is 63775148621. The next prime is 63775148651. The reversal of 63775148641 is 14684157736.

It is a happy number.

63775148641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 63775148641 - 2⁵ = 63775148609 is a prime.

It is a super-3 number, since 3×63775148641³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63775148621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 229406871 + ... + 229407148.

It is an arithmetic number, because the mean of its divisors is an integer number (16058490700).

Almost surely, 2^63775148641 is an apocalyptic number.

It is an amenable number.

63775148641 is a deficient number, since it is larger than the sum of its proper divisors (458814159).

63775148641 is a wasteful number, since it uses less digits than its factorization.

63775148641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458814158.

The product of its digits is 3386880, while the sum is 52.

The spelling of 63775148641 in words is "sixty-three billion, seven hundred seventy-five million, one hundred forty-eight thousand, six hundred forty-one".