1581460642608 has 240 divisors, whose sum is σ = 5489463187584. Its totient is φ = 386606008320.

The previous prime is 1581460642607. The next prime is 1581460642633. The reversal of 1581460642608 is 8062460641851.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (1581460642607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1358010 + ... + 2237657.

Almost surely, 2^{1581460642608} is an apocalyptic number.

It is an amenable number.

1581460642608 is an abundant number, since it is smaller than the sum of its proper divisors (3908002544976).

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

1581460642608 is a wasteful number, since it uses less digits than its factorization.

1581460642608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3595720 (or 3595707 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 51.

The spelling of 1581460642608 in words is "one trillion, five hundred eighty-one billion, four hundred sixty million, six hundred forty-two thousand, six hundred eight".