20514425177 has 2 divisors, whose sum is σ = 20514425178. Its totient is φ = 20514425176.

The previous prime is 20514425117. The next prime is 20514425201. The reversal of 20514425177 is 77152441502.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17147640601 + 3366784576 = 130949^2 + 58024^2 .

It is a cyclic number.

It is not a de Polignac number, because 20514425177 - 2⁸ = 20514424921 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20514425177.

It is not a weakly prime, because it can be changed into another prime (20514425117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10257212588 + 10257212589.

It is an arithmetic number, because the mean of its divisors is an integer number (10257212589).

Almost surely, 2^20514425177 is an apocalyptic number.

It is an amenable number.

20514425177 is a deficient number, since it is larger than the sum of its proper divisors (1).

20514425177 is an equidigital number, since it uses as much as digits as its factorization.

20514425177 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 78400, while the sum is 38.

Adding to 20514425177 its reverse (77152441502), we get a palindrome (97666866679).

The spelling of 20514425177 in words is "twenty billion, five hundred fourteen million, four hundred twenty-five thousand, one hundred seventy-seven".