19620897361252 has 12 divisors (see below), whose sum is σ = 37458076780656. Its totient is φ = 8918589709640.

The previous prime is 19620897361181. The next prime is 19620897361259. The reversal of 19620897361252 is 25216379802691.

It is a super-2 number, since 2×19620897361252² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19620897361259) 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, 222964742698 + ... + 222964742785.

It is an arithmetic number, because the mean of its divisors is an integer number (3121506398388).

Almost surely, 2^{19620897361252} is an apocalyptic number.

It is an amenable number.

19620897361252 is a deficient number, since it is larger than the sum of its proper divisors (17837179419404).

19620897361252 is a wasteful number, since it uses less digits than its factorization.

19620897361252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445929485498 (or 445929485496 counting only the distinct ones).

The product of its (nonzero) digits is 19595520, while the sum is 61.

The spelling of 19620897361252 in words is "nineteen trillion, six hundred twenty billion, eight hundred ninety-seven million, three hundred sixty-one thousand, two hundred fifty-two".