63421367764 has 24 divisors (see below), whose sum is σ = 121568345640. Its totient is φ = 28816198656.

The previous prime is 63421367761. The next prime is 63421367767. The reversal of 63421367764 is 46776312436.

It is an interprime number because it is at equal distance from previous prime (63421367761) and next prime (63421367767).

It can be written as a sum of positive squares in 4 ways, for example, as 9547244100 + 53874123664 = 97710^2 + 232108^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63421367761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16078497 + ... + 16082440.

It is an arithmetic number, because the mean of its divisors is an integer number (5065347735).

Almost surely, 2^63421367764 is an apocalyptic number.

It is an amenable number.

63421367764 is a deficient number, since it is larger than the sum of its proper divisors (58146977876).

63421367764 is a wasteful number, since it uses less digits than its factorization.

63421367764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32160987 (or 32160985 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 49.

The spelling of 63421367764 in words is "sixty-three billion, four hundred twenty-one million, three hundred sixty-seven thousand, seven hundred sixty-four".