63444317444890 has 64 divisors (see below), whose sum is σ = 116032446097920. Its totient is φ = 24973778269440.

The previous prime is 63444317444869. The next prime is 63444317444891. The reversal of 63444317444890 is 9844471344436.

It is a super-2 number, since 2×63444317444890² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (63444317444891) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 395401219 + ... + 395561641.

It is an arithmetic number, because the mean of its divisors is an integer number (1813006970280).

Almost surely, 2^{63444317444890} is an apocalyptic number.

63444317444890 is a deficient number, since it is larger than the sum of its proper divisors (52588128653030).

63444317444890 is a wasteful number, since it uses less digits than its factorization.

63444317444890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163007.

The product of its (nonzero) digits is 111476736, while the sum is 61.

The spelling of 63444317444890 in words is "sixty-three trillion, four hundred forty-four billion, three hundred seventeen million, four hundred forty-four thousand, eight hundred ninety".