1587780020320 has 48 divisors (see below), whose sum is σ = 4039678787760. Its totient is φ = 586257237504.

The previous prime is 1587780020311. The next prime is 1587780020381. The reversal of 1587780020320 is 230200877851.

It is a super-2 number, since 2×1587780020320² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 381675810 + ... + 381679969.

It is an arithmetic number, because the mean of its divisors is an integer number (84159974745).

Almost surely, 2^{1587780020320} is an apocalyptic number.

1587780020320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1587780020320 is an abundant number, since it is smaller than the sum of its proper divisors (2451898767440).

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

1587780020320 is a wasteful number, since it uses less digits than its factorization.

1587780020320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763355807 (or 763355799 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 43.

The spelling of 1587780020320 in words is "one trillion, five hundred eighty-seven billion, seven hundred eighty million, twenty thousand, three hundred twenty".