1573015728730 has 8 divisors (see below), whose sum is σ = 2831428311732. Its totient is φ = 629206291488.

The previous prime is 1573015728701. The next prime is 1573015728769. The reversal of 1573015728730 is 378275103751.

It can be written as a sum of positive squares in 2 ways, for example, as 1423671353329 + 149344375401 = 1193177^2 + 386451^2 .

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, 78650786427 + ... + 78650786446.

Almost surely, 2^{1573015728730} is an apocalyptic number.

1573015728730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1573015728730 is a deficient number, since it is larger than the sum of its proper divisors (1258412583002).

1573015728730 is a wasteful number, since it uses less digits than its factorization.

1573015728730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157301572880.

The product of its (nonzero) digits is 1234800, while the sum is 49.

The spelling of 1573015728730 in words is "one trillion, five hundred seventy-three billion, fifteen million, seven hundred twenty-eight thousand, seven hundred thirty".