1581983046087 has 8 divisors (see below), whose sum is σ = 2201019890304. Its totient is φ = 1008800782968.

The previous prime is 1581983046073. The next prime is 1581983046151. The reversal of 1581983046087 is 7806403891851.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1581983046087 - 2⁶ = 1581983046023 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1581983046087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1581983046037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11463645193 + ... + 11463645330.

It is an arithmetic number, because the mean of its divisors is an integer number (275127486288).

Almost surely, 2^{1581983046087} is an apocalyptic number.

1581983046087 is a deficient number, since it is larger than the sum of its proper divisors (619036844217).

1581983046087 is a wasteful number, since it uses less digits than its factorization.

1581983046087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22927290549.

The product of its (nonzero) digits is 11612160, while the sum is 60.

The spelling of 1581983046087 in words is "one trillion, five hundred eighty-one billion, nine hundred eighty-three million, forty-six thousand, eighty-seven".