19677236832 has 216 divisors, whose sum is σ = 63630796320. Its totient is φ = 5756889600.

The previous prime is 19677236819. The next prime is 19677236863. The reversal of 19677236832 is 23863277691.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1000857 + ... + 1020327.

It is an arithmetic number, because the mean of its divisors is an integer number (294587020).

Almost surely, 2^19677236832 is an apocalyptic number.

19677236832 is a gapful number since it is divisible by the number (12) 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 19677236832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31815398160).

19677236832 is an abundant number, since it is smaller than the sum of its proper divisors (43953559488).

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

19677236832 is a wasteful number, since it uses less digits than its factorization.

19677236832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19538 (or 19516 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 54.

The spelling of 19677236832 in words is "nineteen billion, six hundred seventy-seven million, two hundred thirty-six thousand, eight hundred thirty-two".