63194008640 has 112 divisors (see below), whose sum is σ = 174155404800. Its totient is φ = 21392197632.

The previous prime is 63194008621. The next prime is 63194008643. The reversal of 63194008640 is 4680049136.

It is a tau number, because it is divible by the number of its divisors (112).

It is a super-3 number, since 3×63194008640³ (a number of 33 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (63194008643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1595 + ... + 355514.

Almost surely, 2^63194008640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63194008640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87077702400).

63194008640 is an abundant number, since it is smaller than the sum of its proper divisors (110961396160).

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

63194008640 is a wasteful number, since it uses less digits than its factorization.

63194008640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357212 (or 357202 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 41.

The spelling of 63194008640 in words is "sixty-three billion, one hundred ninety-four million, eight thousand, six hundred forty".