20132430977 has 2 divisors, whose sum is σ = 20132430978. Its totient is φ = 20132430976.

The previous prime is 20132430973. The next prime is 20132431013. The reversal of 20132430977 is 77903423102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13157007616 + 6975423361 = 114704^2 + 83519^2 .

It is a cyclic number.

It is not a de Polignac number, because 20132430977 - 2² = 20132430973 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20132430977.

It is not a weakly prime, because it can be changed into another prime (20132430973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10066215488 + 10066215489.

It is an arithmetic number, because the mean of its divisors is an integer number (10066215489).

Almost surely, 2^20132430977 is an apocalyptic number.

It is an amenable number.

20132430977 is a deficient number, since it is larger than the sum of its proper divisors (1).

20132430977 is an equidigital number, since it uses as much as digits as its factorization.

20132430977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 38.

The spelling of 20132430977 in words is "twenty billion, one hundred thirty-two million, four hundred thirty thousand, nine hundred seventy-seven".