63291113377 has 4 divisors (see below), whose sum is σ = 63715886100. Its totient is φ = 62866340656.

The previous prime is 63291113363. The next prime is 63291113383. The reversal of 63291113377 is 77331119236.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21837746176 + 41453367201 = 147776^2 + 203601^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63291113377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63291113317) 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, 212386138 + ... + 212386435.

It is an arithmetic number, because the mean of its divisors is an integer number (15928971525).

Almost surely, 2^63291113377 is an apocalyptic number.

It is an amenable number.

63291113377 is a deficient number, since it is larger than the sum of its proper divisors (424772723).

63291113377 is a wasteful number, since it uses less digits than its factorization.

63291113377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424772722.

The product of its digits is 142884, while the sum is 43.

The spelling of 63291113377 in words is "sixty-three billion, two hundred ninety-one million, one hundred thirteen thousand, three hundred seventy-seven".