19701181829898 has 12 divisors (see below), whose sum is σ = 42685893964818. Its totient is φ = 6567060609960.

The previous prime is 19701181829881. The next prime is 19701181829909. The reversal of 19701181829898 is 89892818110791.

It is a happy number.

19701181829898 is a `hidden beast` number, since 1 + 9 + 70 + 1 + 181 + 8 + 298 + 98 = 666.

It can be written as a sum of positive squares in only one way, i.e., 16852199050449 + 2848982779449 = 4105143^2 + 1687893^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 547255050813 + ... + 547255050848.

Almost surely, 2^{19701181829898} is an apocalyptic number.

19701181829898 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

19701181829898 is an abundant number, since it is smaller than the sum of its proper divisors (22984712134920).

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

19701181829898 is a wasteful number, since it uses less digits than its factorization.

19701181829898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094510101669 (or 1094510101666 counting only the distinct ones).

The product of its (nonzero) digits is 41803776, while the sum is 72.

The spelling of 19701181829898 in words is "nineteen trillion, seven hundred one billion, one hundred eighty-one million, eight hundred twenty-nine thousand, eight hundred ninety-eight".