27378543467402 has 16 divisors (see below), whose sum is σ = 43612600416840. Its totient is φ = 12845788935168.

The previous prime is 27378543467393. The next prime is 27378543467423. The reversal of 27378543467402 is 20476434587372.

It is a Cunningham number, because it is equal to 5232451²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 27378543467401 + 1 = 5232451^2 + 1^2 .

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, 1194723377 + ... + 1194746292.

Almost surely, 2^{27378543467402} is an apocalyptic number.

27378543467402 is a deficient number, since it is larger than the sum of its proper divisors (16234056949438).

27378543467402 is a wasteful number, since it uses less digits than its factorization.

27378543467402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2389470025.

The product of its (nonzero) digits is 189665280, while the sum is 62.

The spelling of 27378543467402 in words is "twenty-seven trillion, three hundred seventy-eight billion, five hundred forty-three million, four hundred sixty-seven thousand, four hundred two".