63534426601 has 4 divisors (see below), whose sum is σ = 65084046804. Its totient is φ = 61984806400.

The previous prime is 63534426569. The next prime is 63534426661. The reversal of 63534426601 is 10662443536.

It is a happy number.

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 24537656025 + 38996770576 = 156645^2 + 197476^2 .

It is a cyclic number.

It is not a de Polignac number, because 63534426601 - 2⁵ = 63534426569 is a prime.

It is a Smith number, since the sum of its digits (40) 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 not an unprimeable number, because it can be changed into a prime (63534426661) 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, 774810040 + ... + 774810121.

It is an arithmetic number, because the mean of its divisors is an integer number (16271011701).

Almost surely, 2^63534426601 is an apocalyptic number.

It is an amenable number.

63534426601 is a deficient number, since it is larger than the sum of its proper divisors (1549620203).

63534426601 is a wasteful number, since it uses less digits than its factorization.

63534426601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1549620202.

The product of its (nonzero) digits is 311040, while the sum is 40.

The spelling of 63534426601 in words is "sixty-three billion, five hundred thirty-four million, four hundred twenty-six thousand, six hundred one".