20100868380 has 36 divisors (see below), whose sum is σ = 60972634632. Its totient is φ = 5360231520.

The previous prime is 20100868349. The next prime is 20100868409. The reversal of 20100868380 is 8386800102.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 55835566 + ... + 55835925.

Almost surely, 2^20100868380 is an apocalyptic number.

20100868380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20100868380 is an abundant number, since it is smaller than the sum of its proper divisors (40871766252).

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

20100868380 is a wasteful number, since it uses less digits than its factorization.

20100868380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111671506 (or 111671501 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The spelling of 20100868380 in words is "twenty billion, one hundred million, eight hundred sixty-eight thousand, three hundred eighty".