20803554760 has 16 divisors (see below), whose sum is σ = 46807998300. Its totient is φ = 8321421888.

The previous prime is 20803554719. The next prime is 20803554767. The reversal of 20803554760 is 6745530802.

It can be written as a sum of positive squares in 2 ways, for example, as 20620385604 + 183169156 = 143598^2 + 13534^2 .

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 520088869 = 20803554760 / (2 + 0 + 8 + 0 + 3 + 5 + 5 + 4 + 7 + 6 + 0).

It is not an unprimeable number, because it can be changed into a prime (20803554767) 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, 260044395 + ... + 260044474.

Almost surely, 2^20803554760 is an apocalyptic number.

20803554760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20803554760 is an abundant number, since it is smaller than the sum of its proper divisors (26004443540).

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

20803554760 is a wasteful number, since it uses less digits than its factorization.

20803554760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520088880 (or 520088876 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 40.

The spelling of 20803554760 in words is "twenty billion, eight hundred three million, five hundred fifty-four thousand, seven hundred sixty".