19479161100 has 216 divisors, whose sum is σ = 66168212880. Its totient is φ = 4411169280.

The previous prime is 19479161099. The next prime is 19479161113. The reversal of 19479161100 is 116197491.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1596222 + ... + 1608378.

Almost surely, 2^19479161100 is an apocalyptic number.

19479161100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19479161100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33084106440).

19479161100 is an abundant number, since it is smaller than the sum of its proper divisors (46689051780).

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

19479161100 is a wasteful number, since it uses less digits than its factorization.

19479161100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12297 (or 12283 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 39.

The spelling of 19479161100 in words is "nineteen billion, four hundred seventy-nine million, one hundred sixty-one thousand, one hundred".