427233978061 has 4 divisors (see below), whose sum is σ = 466073430624. Its totient is φ = 388394525500.

The previous prime is 427233978049. The next prime is 427233978071. The reversal of 427233978061 is 160879332724.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 427233978061 - 2¹⁵ = 427233945293 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 (427233978071) 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, 19419726265 + ... + 19419726286.

It is an arithmetic number, because the mean of its divisors is an integer number (116518357656).

Almost surely, 2^427233978061 is an apocalyptic number.

It is an amenable number.

427233978061 is a deficient number, since it is larger than the sum of its proper divisors (38839452563).

427233978061 is a wasteful number, since it uses less digits than its factorization.

427233978061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38839452562.

The product of its (nonzero) digits is 3048192, while the sum is 52.

The spelling of 427233978061 in words is "four hundred twenty-seven billion, two hundred thirty-three million, nine hundred seventy-eight thousand, sixty-one".