638060030964 has 144 divisors (see below), whose sum is σ = 1706474864640. Its totient is φ = 200741405760.

The previous prime is 638060030941. The next prime is 638060031001. The reversal of 638060030964 is 469030060836.

638060030964 is a `hidden beast` number, since 6 + 3 + 8 + 0 + 600 + 30 + 9 + 6 + 4 = 666.

It is a super-2 number, since 2×638060030964² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8324037 + ... + 8400339.

Almost surely, 2^638060030964 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 638060030964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (853237432320).

638060030964 is an abundant number, since it is smaller than the sum of its proper divisors (1068414833676).

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

638060030964 is a wasteful number, since it uses less digits than its factorization.

638060030964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76530 (or 76525 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 45.

The spelling of 638060030964 in words is "six hundred thirty-eight billion, sixty million, thirty thousand, nine hundred sixty-four".