19797915519652 has 12 divisors (see below), whose sum is σ = 34657223330800. Its totient is φ = 9895851710856.

The previous prime is 19797915519647. The next prime is 19797915519667. The reversal of 19797915519652 is 25691551979791.

It is a super-2 number, since 2×19797915519652² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 776497902 + ... + 776523397.

Almost surely, 2^{19797915519652} is an apocalyptic number.

It is an amenable number.

19797915519652 is a deficient number, since it is larger than the sum of its proper divisors (14859307811148).

19797915519652 is a wasteful number, since it uses less digits than its factorization.

19797915519652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1553024490 (or 1553024488 counting only the distinct ones).

The product of its digits is 482233500, while the sum is 76.

The spelling of 19797915519652 in words is "nineteen trillion, seven hundred ninety-seven billion, nine hundred fifteen million, five hundred nineteen thousand, six hundred fifty-two".