427136981278 has 32 divisors (see below), whose sum is σ = 746231507136. Its totient is φ = 179561211648.

The previous prime is 427136981251. The next prime is 427136981279. The reversal of 427136981278 is 872189631724.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427136981279) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3088050 + ... + 3223402.

It is an arithmetic number, because the mean of its divisors is an integer number (23319734598).

Almost surely, 2^427136981278 is an apocalyptic number.

427136981278 is a deficient number, since it is larger than the sum of its proper divisors (319094525858).

427136981278 is a wasteful number, since it uses less digits than its factorization.

427136981278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139668.

The product of its digits is 8128512, while the sum is 58.

The spelling of 427136981278 in words is "four hundred twenty-seven billion, one hundred thirty-six million, nine hundred eighty-one thousand, two hundred seventy-eight".