20013141978 has 48 divisors (see below), whose sum is σ = 45753271200. Its totient is φ = 6304811040.

The previous prime is 20013141977. The next prime is 20013141979. The reversal of 20013141978 is 87914131002.

It is a happy number.

20013141978 is a `hidden beast` number, since 200 + 1 + 31 + 419 + 7 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (20013141977) and next prime (20013141979).

It is not an unprimeable number, because it can be changed into a prime (20013141971) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 73468 + ... + 213128.

It is an arithmetic number, because the mean of its divisors is an integer number (953193150).

Almost surely, 2^20013141978 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20013141978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22876635600).

20013141978 is an abundant number, since it is smaller than the sum of its proper divisors (25740129222).

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

20013141978 is a wasteful number, since it uses less digits than its factorization.

20013141978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140107 (or 140104 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The spelling of 20013141978 in words is "twenty billion, thirteen million, one hundred forty-one thousand, nine hundred seventy-eight".