63525416989 has 4 divisors (see below), whose sum is σ = 63569198880. Its totient is φ = 63481635100.

The previous prime is 63525416987. The next prime is 63525417013. The reversal of 63525416989 is 98961452536.

63525416989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 63525416989 - 2¹ = 63525416987 is a prime.

It is a super-2 number, since 2×63525416989² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63525416987) 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, 21888769 + ... + 21891670.

It is an arithmetic number, because the mean of its divisors is an integer number (15892299720).

Almost surely, 2^63525416989 is an apocalyptic number.

It is an amenable number.

63525416989 is a deficient number, since it is larger than the sum of its proper divisors (43781891).

63525416989 is a wasteful number, since it uses less digits than its factorization.

63525416989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43781890.

The product of its digits is 13996800, while the sum is 58.

The spelling of 63525416989 in words is "sixty-three billion, five hundred twenty-five million, four hundred sixteen thousand, nine hundred eighty-nine".