1615313220256 has 12 divisors (see below), whose sum is σ = 3180147902442. Its totient is φ = 807656610112.

The previous prime is 1615313220253. The next prime is 1615313220371. The reversal of 1615313220256 is 6520223135161.

It can be written as a sum of positive squares in only one way, i.e., 1487375376400 + 127937843856 = 1219580^2 + 357684^2 .

It is not an unprimeable number, because it can be changed into a prime (1615313220253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25239269035 + ... + 25239269098.

Almost surely, 2^{1615313220256} is an apocalyptic number.

1615313220256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1615313220256 is a deficient number, since it is larger than the sum of its proper divisors (1564834682186).

1615313220256 is an equidigital number, since it uses as much as digits as its factorization.

1615313220256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50478538143 (or 50478538135 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 1615313220256 in words is "one trillion, six hundred fifteen billion, three hundred thirteen million, two hundred twenty thousand, two hundred fifty-six".