20276457529 has 2 divisors, whose sum is σ = 20276457530. Its totient is φ = 20276457528.

The previous prime is 20276457503. The next prime is 20276457571. The reversal of 20276457529 is 92575467202.

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., 15438559504 + 4837898025 = 124252^2 + 69555^2 .

It is a cyclic number.

It is not a de Polignac number, because 20276457529 - 2¹⁹ = 20275933241 is a prime.

It is a super-2 number, since 2×20276457529² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20276457329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10138228764 + 10138228765.

It is an arithmetic number, because the mean of its divisors is an integer number (10138228765).

Almost surely, 2^20276457529 is an apocalyptic number.

It is an amenable number.

20276457529 is a deficient number, since it is larger than the sum of its proper divisors (1).

20276457529 is an equidigital number, since it uses as much as digits as its factorization.

20276457529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2116800, while the sum is 49.

The spelling of 20276457529 in words is "twenty billion, two hundred seventy-six million, four hundred fifty-seven thousand, five hundred twenty-nine".