12465562378 has 8 divisors (see below), whose sum is σ = 18699547140. Its totient is φ = 6232380000.

The previous prime is 12465562363. The next prime is 12465562393. The reversal of 12465562378 is 87326556421.

It is an interprime number because it is at equal distance from previous prime (12465562363) and next prime (12465562393).

It can be written as a sum of positive squares in 2 ways, for example, as 12355878649 + 109683729 = 111157^2 + 10473^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160123 + ... + 224878.

Almost surely, 2^12465562378 is an apocalyptic number.

12465562378 is a deficient number, since it is larger than the sum of its proper divisors (6233984762).

12465562378 is a wasteful number, since it uses less digits than its factorization.

12465562378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401192.

The product of its digits is 2419200, while the sum is 49.

The spelling of 12465562378 in words is "twelve billion, four hundred sixty-five million, five hundred sixty-two thousand, three hundred seventy-eight".