10020131977 has 2 divisors, whose sum is σ = 10020131978. Its totient is φ = 10020131976.

The previous prime is 10020131969. The next prime is 10020132013. The reversal of 10020131977 is 77913102001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5368346361 + 4651785616 = 73269^2 + 68204^2 .

It is a cyclic number.

It is not a de Polignac number, because 10020131977 - 2³ = 10020131969 is a prime.

It is not a weakly prime, because it can be changed into another prime (10020131917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5010065988 + 5010065989.

It is an arithmetic number, because the mean of its divisors is an integer number (5010065989).

Almost surely, 2^10020131977 is an apocalyptic number.

It is an amenable number.

10020131977 is a deficient number, since it is larger than the sum of its proper divisors (1).

10020131977 is an equidigital number, since it uses as much as digits as its factorization.

10020131977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2646, while the sum is 31.

Adding to 10020131977 its reverse (77913102001), we get a palindrome (87933233978).

The spelling of 10020131977 in words is "ten billion, twenty million, one hundred thirty-one thousand, nine hundred seventy-seven".