20019978300 has 72 divisors (see below), whose sum is σ = 66199401856. Its totient is φ = 4575994560.

The previous prime is 20019978287. The next prime is 20019978347. The reversal of 20019978300 is 387991002.

It is a super-2 number, since 2×20019978300² (a number of 21 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 (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4764562 + ... + 4768761.

Almost surely, 2^20019978300 is an apocalyptic number.

20019978300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20019978300 is an abundant number, since it is smaller than the sum of its proper divisors (46179423556).

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

20019978300 is a wasteful number, since it uses less digits than its factorization.

20019978300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9533347 (or 9533340 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 39.

The spelling of 20019978300 in words is "twenty billion, nineteen million, nine hundred seventy-eight thousand, three hundred".