63752609161 has 8 divisors (see below), whose sum is σ = 63832775048. Its totient is φ = 63672480000.

The previous prime is 63752609159. The next prime is 63752609189. The reversal of 63752609161 is 16190625736.

63752609161 = T₂₀₆₁₅₈ + T₂₀₆₁₅₉ + T₂₀₆₁₆₀.

It can be written as a sum of positive squares in 4 ways, for example, as 371525625 + 63381083536 = 19275^2 + 251756^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a 4-Lehmer number, since φ(63752609161) divides (63752609161-1)⁴.

It is a cyclic number.

It is not a de Polignac number, because 63752609161 - 2¹ = 63752609159 is a prime.

It is a super-2 number, since 2×63752609161² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63752609111) 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 7 ways as a sum of consecutive naturals, for example, 5202001 + ... + 5214241.

It is an arithmetic number, because the mean of its divisors is an integer number (7979096881).

Almost surely, 2^63752609161 is an apocalyptic number.

63752609161 is the 206160-th centered triangular number.

It is an amenable number.

63752609161 is a deficient number, since it is larger than the sum of its proper divisors (80165887).

63752609161 is a wasteful number, since it uses less digits than its factorization.

63752609161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18363.

The product of its (nonzero) digits is 408240, while the sum is 46.

The spelling of 63752609161 in words is "sixty-three billion, seven hundred fifty-two million, six hundred nine thousand, one hundred sixty-one".