19697852864748 has 12 divisors (see below), whose sum is σ = 45961656684440. Its totient is φ = 6565950954912.

The previous prime is 19697852864743. The next prime is 19697852864777. The reversal of 19697852864748 is 84746825879691.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×19697852864748² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19697852864741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 820743869353 + ... + 820743869376.

Almost surely, 2^{19697852864748} is an apocalyptic number.

It is an amenable number.

19697852864748 is an abundant number, since it is smaller than the sum of its proper divisors (26263803819692).

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

19697852864748 is a wasteful number, since it uses less digits than its factorization.

19697852864748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1641487738736 (or 1641487738734 counting only the distinct ones).

The product of its digits is 11705057280, while the sum is 84.

The spelling of 19697852864748 in words is "nineteen trillion, six hundred ninety-seven billion, eight hundred fifty-two million, eight hundred sixty-four thousand, seven hundred forty-eight".