1578842862520 has 384 divisors, whose sum is σ = 4877490401280. Its totient is φ = 448213708800.

The previous prime is 1578842862517. The next prime is 1578842862523. The reversal of 1578842862520 is 252682488751.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1578842862517) and next prime (1578842862523).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1578842862523) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 17810547 + ... + 17898973.

It is an arithmetic number, because the mean of its divisors is an integer number (12701797920).

Almost surely, 2^{1578842862520} is an apocalyptic number.

1578842862520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1578842862520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2438745200640).

1578842862520 is an abundant number, since it is smaller than the sum of its proper divisors (3298647538760).

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

1578842862520 is a wasteful number, since it uses less digits than its factorization.

1578842862520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88515 (or 88500 counting only the distinct ones).

The product of its (nonzero) digits is 17203200, while the sum is 58.

The spelling of 1578842862520 in words is "one trillion, five hundred seventy-eight billion, eight hundred forty-two million, eight hundred sixty-two thousand, five hundred twenty".