20770210100 has 18 divisors (see below), whose sum is σ = 45071356134. Its totient is φ = 8308084000.

The previous prime is 20770210093. The next prime is 20770210133. The reversal of 20770210100 is 101207702.

It can be written as a sum of positive squares in 3 ways, for example, as 4395424804 + 16374785296 = 66298^2 + 127964^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 103850951 + ... + 103851150.

Almost surely, 2^20770210100 is an apocalyptic number.

20770210100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20770210100 is an abundant number, since it is smaller than the sum of its proper divisors (24301146034).

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

20770210100 is a wasteful number, since it uses less digits than its factorization.

20770210100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207702115 (or 207702108 counting only the distinct ones).

The product of its (nonzero) digits is 196, while the sum is 20.

Adding to 20770210100 its reverse (101207702), we get a palindrome (20871417802).

The spelling of 20770210100 in words is "twenty billion, seven hundred seventy million, two hundred ten thousand, one hundred".