19677700380 has 96 divisors (see below), whose sum is σ = 60939595584. Its totient is φ = 4712822784.

The previous prime is 19677700321. The next prime is 19677700381. The reversal of 19677700380 is 8300777691.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19677700381) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 312057 + ... + 369776.

It is an arithmetic number, because the mean of its divisors is an integer number (634787454).

Almost surely, 2^19677700380 is an apocalyptic number.

19677700380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19677700380 is an abundant number, since it is smaller than the sum of its proper divisors (41261895204).

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

19677700380 is a wasteful number, since it uses less digits than its factorization.

19677700380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681895 (or 681893 counting only the distinct ones).

The product of its (nonzero) digits is 444528, while the sum is 48.

The spelling of 19677700380 in words is "nineteen billion, six hundred seventy-seven million, seven hundred thousand, three hundred eighty".