19704402425880 has 320 divisors, whose sum is σ = 70309590516000. Its totient is φ = 4932364824576.

The previous prime is 19704402425791. The next prime is 19704402425881. The reversal of 19704402425880 is 8852420440791.

19704402425880 is a `hidden beast` number, since 1 + 9 + 70 + 4 + 402 + 42 + 58 + 80 = 666.

It is a super-2 number, since 2×19704402425880² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19704402425881) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 20403366 + ... + 21347274.

Almost surely, 2^{19704402425880} is an apocalyptic number.

19704402425880 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 19704402425880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35154795258000).

19704402425880 is an abundant number, since it is smaller than the sum of its proper divisors (50605188090120).

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

19704402425880 is a wasteful number, since it uses less digits than its factorization.

19704402425880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944328 (or 944315 counting only the distinct ones).

The product of its (nonzero) digits is 5160960, while the sum is 54.

The spelling of 19704402425880 in words is "nineteen trillion, seven hundred four billion, four hundred two million, four hundred twenty-five thousand, eight hundred eighty".