19675817980 has 48 divisors (see below), whose sum is σ = 50854426560. Its totient is φ = 6227071488.

The previous prime is 19675817929. The next prime is 19675817983. The reversal of 19675817980 is 8971857691.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19675817983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5403625 + ... + 5407264.

It is an arithmetic number, because the mean of its divisors is an integer number (1059467220).

Almost surely, 2^19675817980 is an apocalyptic number.

19675817980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19675817980 is an abundant number, since it is smaller than the sum of its proper divisors (31178608580).

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

19675817980 is a wasteful number, since it uses less digits than its factorization.

19675817980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10810918 (or 10810916 counting only the distinct ones).

The product of its (nonzero) digits is 7620480, while the sum is 61.

The spelling of 19675817980 in words is "nineteen billion, six hundred seventy-five million, eight hundred seventeen thousand, nine hundred eighty".