63612325178478 has 48 divisors (see below), whose sum is σ = 139485275701200. Its totient is φ = 20950357259520.

The previous prime is 63612325178471. The next prime is 63612325178489. The reversal of 63612325178478 is 87487152321636.

It is a happy number.

63612325178478 is a `hidden beast` number, since 6 + 3 + 6 + 1 + 2 + 32 + 517 + 84 + 7 + 8 = 666.

It is a super-2 number, since 2×63612325178478² (a number of 28 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63612325178471) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58362283 + ... + 59442246.

It is an arithmetic number, because the mean of its divisors is an integer number (2905943243775).

Almost surely, 2^{63612325178478} is an apocalyptic number.

63612325178478 is an abundant number, since it is smaller than the sum of its proper divisors (75872950522722).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63612325178478 is a wasteful number, since it uses less digits than its factorization.

63612325178478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117804897 (or 117804894 counting only the distinct ones).

The product of its digits is 81285120, while the sum is 63.

The spelling of 63612325178478 in words is "sixty-three trillion, six hundred twelve billion, three hundred twenty-five million, one hundred seventy-eight thousand, four hundred seventy-eight".