19601120016 has 75 divisors (see below), whose sum is σ = 56745919461. Its totient is φ = 6532026624.

The previous prime is 19601119999. The next prime is 19601120017. The reversal of 19601120016 is 61002110691.

The square root of 19601120016 is 140004.

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., 14207686416 + 5393433600 = 119196^2 + 73440^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (19601120017) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 5038200 + ... + 5042088.

Almost surely, 2^19601120016 is an apocalyptic number.

19601120016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

19601120016 is the 140004-th square number.

It is an amenable number.

19601120016 is an abundant number, since it is smaller than the sum of its proper divisors (37144799445).

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

19601120016 is an frugal number, since it uses more digits than its factorization.

19601120016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7798 (or 3894 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The spelling of 19601120016 in words is "nineteen billion, six hundred one million, one hundred twenty thousand, sixteen".