19896608210780 has 96 divisors (see below), whose sum is σ = 48408958832640. Its totient is φ = 6727834391040.

The previous prime is 19896608210771. The next prime is 19896608210821. The reversal of 19896608210780 is 8701280669891.

It is a super-2 number, since 2×19896608210780² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 199556981 + ... + 199656659.

It is an arithmetic number, because the mean of its divisors is an integer number (504259987840).

Almost surely, 2^{19896608210780} is an apocalyptic number.

19896608210780 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 19896608210780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24204479416320).

19896608210780 is an abundant number, since it is smaller than the sum of its proper divisors (28512350621860).

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

19896608210780 is a wasteful number, since it uses less digits than its factorization.

19896608210780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119299 (or 119297 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 65.

The spelling of 19896608210780 in words is "nineteen trillion, eight hundred ninety-six billion, six hundred eight million, two hundred ten thousand, seven hundred eighty".