20001371749632 has 1296 divisors, whose sum is σ = 74601074515968. Its totient is φ = 5041396039680.

The previous prime is 20001371749627. The next prime is 20001371749693. The reversal of 20001371749632 is 23694717310002.

20001371749632 is a `hidden beast` number, since 2 + 0 + 0 + 0 + 1 + 3 + 7 + 1 + 7 + 4 + 9 + 632 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 5508500457 + ... + 5508504087.

Almost surely, 2^{20001371749632} 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 20001371749632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37300537257984).

20001371749632 is an abundant number, since it is smaller than the sum of its proper divisors (54599702766336).

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

20001371749632 is a wasteful number, since it uses less digits than its factorization.

20001371749632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3776 (or 3746 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

The spelling of 20001371749632 in words is "twenty trillion, one billion, three hundred seventy-one million, seven hundred forty-nine thousand, six hundred thirty-two".