1579887565540 has 12 divisors (see below), whose sum is σ = 3317763887676. Its totient is φ = 631955026208.

The previous prime is 1579887565499. The next prime is 1579887565547. The reversal of 1579887565540 is 455657889751.

It can be written as a sum of positive squares in 2 ways, for example, as 946297037284 + 633590528256 = 972778^2 + 795984^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1579887565540.

It is not an unprimeable number, because it can be changed into a prime (1579887565547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39497189119 + ... + 39497189158.

It is an arithmetic number, because the mean of its divisors is an integer number (276480323973).

Almost surely, 2^{1579887565540} is an apocalyptic number.

1579887565540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1579887565540 is an abundant number, since it is smaller than the sum of its proper divisors (1737876322136).

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

1579887565540 is a wasteful number, since it uses less digits than its factorization.

1579887565540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78994378286 (or 78994378284 counting only the distinct ones).

The product of its (nonzero) digits is 423360000, while the sum is 70.

The spelling of 1579887565540 in words is "one trillion, five hundred seventy-nine billion, eight hundred eighty-seven million, five hundred sixty-five thousand, five hundred forty".