63512312777 has 4 divisors (see below), whose sum is σ = 64012409856. Its totient is φ = 63012215700.

The previous prime is 63512312761. The next prime is 63512312867. The reversal of 63512312777 is 77721321536.

It is a happy number.

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 63512312777 - 2⁴ = 63512312761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63512312737) 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, 250048349 + ... + 250048602.

It is an arithmetic number, because the mean of its divisors is an integer number (16003102464).

Almost surely, 2^63512312777 is an apocalyptic number.

It is an amenable number.

63512312777 is a deficient number, since it is larger than the sum of its proper divisors (500097079).

63512312777 is a wasteful number, since it uses less digits than its factorization.

63512312777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500097078.

The product of its digits is 370440, while the sum is 44.

The spelling of 63512312777 in words is "sixty-three billion, five hundred twelve million, three hundred twelve thousand, seven hundred seventy-seven".