63764427551 has 16 divisors (see below), whose sum is σ = 70122544128. Its totient is φ = 57501729600.

The previous prime is 63764427539. The next prime is 63764427553. The reversal of 63764427551 is 15572446736.

It is a cyclic number.

It is not a de Polignac number, because 63764427551 - 2¹⁰ = 63764426527 is a prime.

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 63764427551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63764427553) 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 15 ways as a sum of consecutive naturals, for example, 643040 + ... + 735546.

It is an arithmetic number, because the mean of its divisors is an integer number (4382659008).

Almost surely, 2^63764427551 is an apocalyptic number.

63764427551 is a deficient number, since it is larger than the sum of its proper divisors (6358116577).

63764427551 is a wasteful number, since it uses less digits than its factorization.

63764427551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93022.

The product of its digits is 4233600, while the sum is 50.

The spelling of 63764427551 in words is "sixty-three billion, seven hundred sixty-four million, four hundred twenty-seven thousand, five hundred fifty-one".