19755488201 has 4 divisors (see below), whose sum is σ = 19775304132. Its totient is φ = 19735672272.

The previous prime is 19755488171. The next prime is 19755488227. The reversal of 19755488201 is 10288455791.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17983078201 + 1772410000 = 134101^2 + 42100^2 .

It is a cyclic number.

It is not a de Polignac number, because 19755488201 - 2¹⁴ = 19755471817 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19755488201.

It is not an unprimeable number, because it can be changed into a prime (19755488261) 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, 9906470 + ... + 9908463.

It is an arithmetic number, because the mean of its divisors is an integer number (4943826033).

Almost surely, 2^19755488201 is an apocalyptic number.

It is an amenable number.

19755488201 is a deficient number, since it is larger than the sum of its proper divisors (19815931).

19755488201 is an equidigital number, since it uses as much as digits as its factorization.

19755488201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19815930.

The product of its (nonzero) digits is 806400, while the sum is 50.

The spelling of 19755488201 in words is "nineteen billion, seven hundred fifty-five million, four hundred eighty-eight thousand, two hundred one".