427280754665 has 8 divisors (see below), whose sum is σ = 513638028360. Its totient is φ = 341223855232.

The previous prime is 427280754653. The next prime is 427280754671. The reversal of 427280754665 is 566457082724.

It can be written as a sum of positive squares in 4 ways, for example, as 11579481664 + 415701273001 = 107608^2 + 644749^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 427280754665 - 2³⁶ = 358561277929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 427280754665.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75090434 + ... + 75096123.

It is an arithmetic number, because the mean of its divisors is an integer number (64204753545).

Almost surely, 2^427280754665 is an apocalyptic number.

It is an amenable number.

427280754665 is a deficient number, since it is larger than the sum of its proper divisors (86357273695).

427280754665 is a wasteful number, since it uses less digits than its factorization.

427280754665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150187131.

The product of its (nonzero) digits is 22579200, while the sum is 56.

The spelling of 427280754665 in words is "four hundred twenty-seven billion, two hundred eighty million, seven hundred fifty-four thousand, six hundred sixty-five".