20001032977 has 2 divisors, whose sum is σ = 20001032978. Its totient is φ = 20001032976.

The previous prime is 20001032963. The next prime is 20001033037. The reversal of 20001032977 is 77923010002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13549891216 + 6451141761 = 116404^2 + 80319^2 .

It is a cyclic number.

It is not a de Polignac number, because 20001032977 - 2²⁷ = 19866815249 is a prime.

It is not a weakly prime, because it can be changed into another prime (20001036977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000516488 + 10000516489.

It is an arithmetic number, because the mean of its divisors is an integer number (10000516489).

Almost surely, 2^20001032977 is an apocalyptic number.

It is an amenable number.

20001032977 is a deficient number, since it is larger than the sum of its proper divisors (1).

20001032977 is an equidigital number, since it uses as much as digits as its factorization.

20001032977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5292, while the sum is 31.

Adding to 20001032977 its reverse (77923010002), we get a palindrome (97924042979).

The spelling of 20001032977 in words is "twenty billion, one million, thirty-two thousand, nine hundred seventy-seven".