427519021277 has 4 divisors (see below), whose sum is σ = 433375446300. Its totient is φ = 421662596256.

The previous prime is 427519021271. The next prime is 427519021309. The reversal of 427519021277 is 772120915724.

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 265602113956 + 161916907321 = 515366^2 + 402389^2 .

It is a cyclic number.

It is not a de Polignac number, because 427519021277 - 2¹⁴ = 427519004893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427519021271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2928212402 + ... + 2928212547.

It is an arithmetic number, because the mean of its divisors is an integer number (108343861575).

Almost surely, 2^427519021277 is an apocalyptic number.

It is an amenable number.

427519021277 is a deficient number, since it is larger than the sum of its proper divisors (5856425023).

427519021277 is an equidigital number, since it uses as much as digits as its factorization.

427519021277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5856425022.

The product of its (nonzero) digits is 493920, while the sum is 47.

The spelling of 427519021277 in words is "four hundred twenty-seven billion, five hundred nineteen million, twenty-one thousand, two hundred seventy-seven".