20630106377 has 2 divisors, whose sum is σ = 20630106378. Its totient is φ = 20630106376.

The previous prime is 20630106361. The next prime is 20630106433. The reversal of 20630106377 is 77360103602.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20627853376 + 2253001 = 143624^2 + 1501^2 .

It is a cyclic number.

It is not a de Polignac number, because 20630106377 - 2⁴ = 20630106361 is a prime.

It is a super-2 number, since 2×20630106377² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20630106877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10315053188 + 10315053189.

It is an arithmetic number, because the mean of its divisors is an integer number (10315053189).

Almost surely, 2^20630106377 is an apocalyptic number.

It is an amenable number.

20630106377 is a deficient number, since it is larger than the sum of its proper divisors (1).

20630106377 is an equidigital number, since it uses as much as digits as its factorization.

20630106377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752, while the sum is 35.

Adding to 20630106377 its reverse (77360103602), we get a palindrome (97990209979).

The spelling of 20630106377 in words is "twenty billion, six hundred thirty million, one hundred six thousand, three hundred seventy-seven".