20363137872 has 160 divisors (see below), whose sum is σ = 67847086080. Its totient is φ = 5106716160.

The previous prime is 20363137853. The next prime is 20363137903. The reversal of 20363137872 is 27873136302.

It is a Harshad number since it is a multiple of its sum of digits (42).

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 31 ways as a sum of consecutive naturals, for example, 12193 + ... + 202175.

It is an arithmetic number, because the mean of its divisors is an integer number (424044288).

Almost surely, 2^20363137872 is an apocalyptic number.

20363137872 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20363137872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33923543040).

20363137872 is an abundant number, since it is smaller than the sum of its proper divisors (47483948208).

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

20363137872 is a wasteful number, since it uses less digits than its factorization.

20363137872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190041 (or 190035 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 42.

The spelling of 20363137872 in words is "twenty billion, three hundred sixty-three million, one hundred thirty-seven thousand, eight hundred seventy-two".