63523463506 has 4 divisors (see below), whose sum is σ = 95285195262. Its totient is φ = 31761731752.

The previous prime is 63523463501. The next prime is 63523463513. The reversal of 63523463506 is 60536432536.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 37146780225 + 26376683281 = 192735^2 + 162409^2 .

It is a super-2 number, since 2×63523463506² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (63523463501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15880865875 + ... + 15880865878.

Almost surely, 2^63523463506 is an apocalyptic number.

63523463506 is a deficient number, since it is larger than the sum of its proper divisors (31761731756).

63523463506 is a wasteful number, since it uses less digits than its factorization.

63523463506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31761731755.

The product of its (nonzero) digits is 1166400, while the sum is 43.

The spelling of 63523463506 in words is "sixty-three billion, five hundred twenty-three million, four hundred sixty-three thousand, five hundred six".