1572056509478 has 32 divisors (see below), whose sum is σ = 2902595411520. Its totient is φ = 621840199680.

The previous prime is 1572056509427. The next prime is 1572056509519. The reversal of 1572056509478 is 8749056502751.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1082438 + ... + 2077446.

It is an arithmetic number, because the mean of its divisors is an integer number (90706106610).

Almost surely, 2^{1572056509478} is an apocalyptic number.

1572056509478 is a deficient number, since it is larger than the sum of its proper divisors (1330538902042).

1572056509478 is a wasteful number, since it uses less digits than its factorization.

1572056509478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1003712.

The product of its (nonzero) digits is 21168000, while the sum is 59.

The spelling of 1572056509478 in words is "one trillion, five hundred seventy-two billion, fifty-six million, five hundred nine thousand, four hundred seventy-eight".