1578779205152 has 54 divisors (see below), whose sum is σ = 3121699445109. Its totient is φ = 785981408640.

The previous prime is 1578779205137. The next prime is 1578779205169. The reversal of 1578779205152 is 2515029778751.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 1459834231696 + 118944973456 = 1208236^2 + 344884^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=888476.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1578779205091 and 1578779205100.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2764937027 + ... + 2764937597.

Almost surely, 2^{1578779205152} is an apocalyptic number.

It is an amenable number.

1578779205152 is a deficient number, since it is larger than the sum of its proper divisors (1542920239957).

1578779205152 is an frugal number, since it uses more digits than its factorization.

1578779205152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1930 (or 962 counting only the distinct ones).

The product of its (nonzero) digits is 12348000, while the sum is 59.

The spelling of 1578779205152 in words is "one trillion, five hundred seventy-eight billion, seven hundred seventy-nine million, two hundred five thousand, one hundred fifty-two".