1204387438578 has 16 divisors (see below), whose sum is σ = 2430873730560. Its totient is φ = 397779337296.

The previous prime is 1204387438567. The next prime is 1204387438591. The reversal of 1204387438578 is 8758347834021.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 920784850 + ... + 920786157.

It is an arithmetic number, because the mean of its divisors is an integer number (151929608160).

Almost surely, 2^{1204387438578} is an apocalyptic number.

1204387438578 is an abundant number, since it is smaller than the sum of its proper divisors (1226486291982).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1204387438578 is a wasteful number, since it uses less digits than its factorization.

1204387438578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1841571121.

The product of its (nonzero) digits is 36126720, while the sum is 60.

The spelling of 1204387438578 in words is "one trillion, two hundred four billion, three hundred eighty-seven million, four hundred thirty-eight thousand, five hundred seventy-eight".