20196619849452 has 24 divisors (see below), whose sum is σ = 47125519037296. Its totient is φ = 6732196227648.

The previous prime is 20196619849451. The next prime is 20196619849457. The reversal of 20196619849452 is 25494891669102.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20196619849451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14213358 + ... + 15569610.

Almost surely, 2^{20196619849452} is an apocalyptic number.

It is an amenable number.

20196619849452 is an abundant number, since it is smaller than the sum of its proper divisors (26928899187844).

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

20196619849452 is a wasteful number, since it uses less digits than its factorization.

20196619849452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2597217 (or 2597215 counting only the distinct ones).

The product of its (nonzero) digits is 67184640, while the sum is 66.

The spelling of 20196619849452 in words is "twenty trillion, one hundred ninety-six billion, six hundred nineteen million, eight hundred forty-nine thousand, four hundred fifty-two".