13631214278 has 32 divisors (see below), whose sum is σ = 23671802880. Its totient is φ = 5818181760.

The previous prime is 13631214277. The next prime is 13631214283. The reversal of 13631214278 is 87241213631.

It is a super-2 number, since 2×13631214278² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13631214277) 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 15 ways as a sum of consecutive naturals, for example, 122675 + ... + 205697.

It is an arithmetic number, because the mean of its divisors is an integer number (739743840).

Almost surely, 2^13631214278 is an apocalyptic number.

13631214278 is a deficient number, since it is larger than the sum of its proper divisors (10040588602).

13631214278 is a wasteful number, since it uses less digits than its factorization.

13631214278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83492.

The product of its digits is 48384, while the sum is 38.

The spelling of 13631214278 in words is "thirteen billion, six hundred thirty-one million, two hundred fourteen thousand, two hundred seventy-eight".