1378534223402 has 32 divisors (see below), whose sum is σ = 2411540112000. Its totient is φ = 590773436064.

The previous prime is 1378534223401. The next prime is 1378534223449. The reversal of 1378534223402 is 2043224358731.

It is not an unprimeable number, because it can be changed into a prime (1378534223401) 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, 24883049 + ... + 24938387.

It is an arithmetic number, because the mean of its divisors is an integer number (75360628500).

Almost surely, 2^{1378534223402} is an apocalyptic number.

1378534223402 is a deficient number, since it is larger than the sum of its proper divisors (1033005888598).

1378534223402 is an equidigital number, since it uses as much as digits as its factorization.

1378534223402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91675 (or 91661 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 44.

The spelling of 1378534223402 in words is "one trillion, three hundred seventy-eight billion, five hundred thirty-four million, two hundred twenty-three thousand, four hundred two".