20280512027 has 2 divisors, whose sum is σ = 20280512028. Its totient is φ = 20280512026.

The previous prime is 20280512023. The next prime is 20280512033. The reversal of 20280512027 is 72021508202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20280512027 - 2² = 20280512023 is a prime.

It is a super-2 number, since 2×20280512027² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20280512023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10140256013 + 10140256014.

It is an arithmetic number, because the mean of its divisors is an integer number (10140256014).

Almost surely, 2^20280512027 is an apocalyptic number.

20280512027 is a deficient number, since it is larger than the sum of its proper divisors (1).

20280512027 is an equidigital number, since it uses as much as digits as its factorization.

20280512027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4480, while the sum is 29.

The spelling of 20280512027 in words is "twenty billion, two hundred eighty million, five hundred twelve thousand, twenty-seven".