19220297737216 has 99 divisors (see below), whose sum is σ = 40819945675089. Its totient is φ = 9043723665408.

The previous prime is 19220297737187. The next prime is 19220297737229. The reversal of 19220297737216 is 61273779202291.

The square root of 19220297737216 is 4384096.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 14963899622400 + 4256398114816 = 3868320^2 + 2063104^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2384944195 + ... + 2384952253.

Almost surely, 2^{19220297737216} is an apocalyptic number.

19220297737216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

19220297737216 is the 4384096-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19220297737216

19220297737216 is an abundant number, since it is smaller than the sum of its proper divisors (21599647937873).

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

19220297737216 is an frugal number, since it uses more digits than its factorization.

19220297737216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16172 (or 8078 counting only the distinct ones).

The product of its (nonzero) digits is 8001504, while the sum is 58.

The spelling of 19220297737216 in words is "nineteen trillion, two hundred twenty billion, two hundred ninety-seven million, seven hundred thirty-seven thousand, two hundred sixteen".