19775030109408 has 144 divisors (see below), whose sum is σ = 64373695023456. Its totient is φ = 5640791270400.

The previous prime is 19775030109361. The next prime is 19775030109433. The reversal of 19775030109408 is 80490103057791.

It is a happy number.

19775030109408 is a `hidden beast` number, since 1 + 97 + 7 + 503 + 0 + 1 + 0 + 9 + 40 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×19775030109408² (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 23 ways as a sum of consecutive naturals, for example, 6765043 + ... + 9236658.

It is an arithmetic number, because the mean of its divisors is an integer number (447039548774).

Almost surely, 2^{19775030109408} is an apocalyptic number.

19775030109408 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

19775030109408 is an abundant number, since it is smaller than the sum of its proper divisors (44598664914048).

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

19775030109408 is a wasteful number, since it uses less digits than its factorization.

19775030109408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16002337 (or 16002326 counting only the distinct ones).

The product of its (nonzero) digits is 1905120, while the sum is 54.

The spelling of 19775030109408 in words is "nineteen trillion, seven hundred seventy-five billion, thirty million, one hundred nine thousand, four hundred eight".