63247346077 has 4 divisors (see below), whose sum is σ = 64789964316. Its totient is φ = 61704727840.

The previous prime is 63247345991. The next prime is 63247346083. The reversal of 63247346077 is 77064374236.

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 14976619641 + 48270726436 = 122379^2 + 219706^2 .

It is a cyclic number.

It is not a de Polignac number, because 63247346077 - 2⁷ = 63247345949 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63247346077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63247346377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 771309058 + ... + 771309139.

It is an arithmetic number, because the mean of its divisors is an integer number (16197491079).

Almost surely, 2^63247346077 is an apocalyptic number.

It is an amenable number.

63247346077 is a deficient number, since it is larger than the sum of its proper divisors (1542618239).

63247346077 is a wasteful number, since it uses less digits than its factorization.

63247346077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1542618238.

The product of its (nonzero) digits is 3556224, while the sum is 49.

The spelling of 63247346077 in words is "sixty-three billion, two hundred forty-seven million, three hundred forty-six thousand, seventy-seven".