20371508369988 has 144 divisors (see below), whose sum is σ = 53124537977280. Its totient is φ = 6053939232768.

The previous prime is 20371508369951. The next prime is 20371508369999. The reversal of 20371508369988 is 88996380517302.

It is a happy number.

It is a super-2 number, since 2×20371508369988² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 955814820 + ... + 955836132.

It is an arithmetic number, because the mean of its divisors is an integer number (368920402620).

Almost surely, 2^{20371508369988} 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 20371508369988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26562268988640).

20371508369988 is an abundant number, since it is smaller than the sum of its proper divisors (32753029607292).

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

20371508369988 is a wasteful number, since it uses less digits than its factorization.

20371508369988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34354 (or 34333 counting only the distinct ones).

The product of its (nonzero) digits is 156764160, while the sum is 69.

The spelling of 20371508369988 in words is "twenty trillion, three hundred seventy-one billion, five hundred eight million, three hundred sixty-nine thousand, nine hundred eighty-eight".