63983196601 has 3 divisors (see below), whose sum is σ = 63983449551. Its totient is φ = 63982943652.

The previous prime is 63983196587. The next prime is 63983196617. The reversal of 63983196601 is 10669138936.

The square root of 63983196601 is 252949.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 27142233001 + 36840963600 = 164749^2 + 191940^2 .

It is not a de Polignac number, because 63983196601 - 2²¹ = 63981099449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63983196671) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 126475 + ... + 379423.

It is an arithmetic number, because the mean of its divisors is an integer number (21327816517).

Almost surely, 2^63983196601 is an apocalyptic number.

63983196601 is the 252949-th square number.

63983196601 is the 126475-th centered octagonal number.

It is an amenable number.

63983196601 is a deficient number, since it is larger than the sum of its proper divisors (252950).

63983196601 is an frugal number, since it uses more digits than its factorization.

63983196601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505898 (or 252949 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 52.

The spelling of 63983196601 in words is "sixty-three billion, nine hundred eighty-three million, one hundred ninety-six thousand, six hundred one".