63744130578 has 16 divisors (see below), whose sum is σ = 129391071840. Its totient is φ = 20930908416.

The previous prime is 63744130573. The next prime is 63744130589. The reversal of 63744130578 is 87503144736.

It is a super-2 number, since 2×63744130578² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (63744130573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79283343 + ... + 79284146.

It is an arithmetic number, because the mean of its divisors is an integer number (8086941990).

Almost surely, 2^63744130578 is an apocalyptic number.

63744130578 is an abundant number, since it is smaller than the sum of its proper divisors (65646941262).

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

63744130578 is a wasteful number, since it uses less digits than its factorization.

63744130578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158567561.

The product of its (nonzero) digits is 1693440, while the sum is 48.

The spelling of 63744130578 in words is "sixty-three billion, seven hundred forty-four million, one hundred thirty thousand, five hundred seventy-eight".