427280212985 has 4 divisors (see below), whose sum is σ = 512736255588. Its totient is φ = 341824170384.

The previous prime is 427280212973. The next prime is 427280212991. The reversal of 427280212985 is 589212082724.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 85004901136 + 342275311849 = 291556^2 + 585043^2 .

It is a cyclic number.

It is not a de Polignac number, because 427280212985 - 2¹⁴ = 427280196601 is a prime.

It is a super-2 number, since 2×427280212985² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42728021294 + ... + 42728021303.

It is an arithmetic number, because the mean of its divisors is an integer number (128184063897).

Almost surely, 2^427280212985 is an apocalyptic number.

It is an amenable number.

427280212985 is a deficient number, since it is larger than the sum of its proper divisors (85456042603).

427280212985 is an equidigital number, since it uses as much as digits as its factorization.

427280212985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85456042602.

The product of its (nonzero) digits is 1290240, while the sum is 50.

The spelling of 427280212985 in words is "four hundred twenty-seven billion, two hundred eighty million, two hundred twelve thousand, nine hundred eighty-five".