63076612721 has 4 divisors (see below), whose sum is σ = 63086886912. Its totient is φ = 63066338532.

The previous prime is 63076612717. The next prime is 63076612747. The reversal of 63076612721 is 12721667036.

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 63076612721 - 2² = 63076612717 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63076612421) 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, 5127881 + ... + 5140166.

It is an arithmetic number, because the mean of its divisors is an integer number (15771721728).

Almost surely, 2^63076612721 is an apocalyptic number.

It is an amenable number.

63076612721 is a deficient number, since it is larger than the sum of its proper divisors (10274191).

63076612721 is a wasteful number, since it uses less digits than its factorization.

63076612721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10274190.

The product of its (nonzero) digits is 127008, while the sum is 41.

The spelling of 63076612721 in words is "sixty-three billion, seventy-six million, six hundred twelve thousand, seven hundred twenty-one".