20496473216 has 16 divisors (see below), whose sum is σ = 40832817990. Its totient is φ = 10248236544.

The previous prime is 20496473213. The next prime is 20496473219. The reversal of 20496473216 is 61237469402.

It is an interprime number because it is at equal distance from previous prime (20496473213) and next prime (20496473219).

It can be written as a sum of positive squares in only one way, i.e., 11728023616 + 8768449600 = 108296^2 + 93640^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is not an unprimeable number, because it can be changed into a prime (20496473213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80064221 + ... + 80064476.

Almost surely, 2^20496473216 is an apocalyptic number.

It is an amenable number.

20496473216 is a deficient number, since it is larger than the sum of its proper divisors (20336344774).

20496473216 is an equidigital number, since it uses as much as digits as its factorization.

20496473216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160128711 (or 160128699 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 44.

The spelling of 20496473216 in words is "twenty billion, four hundred ninety-six million, four hundred seventy-three thousand, two hundred sixteen".