1578661630630 has 64 divisors (see below), whose sum is σ = 3402326126592. Its totient is φ = 515977672320.

The previous prime is 1578661630621. The next prime is 1578661630633. The reversal of 1578661630630 is 360361668751.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1578661630633) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5283669 + ... + 5574448.

It is an arithmetic number, because the mean of its divisors is an integer number (53161345728).

Almost surely, 2^{1578661630630} is an apocalyptic number.

1578661630630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1578661630630 is an abundant number, since it is smaller than the sum of its proper divisors (1823664495962).

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

1578661630630 is a wasteful number, since it uses less digits than its factorization.

1578661630630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10858229.

The product of its (nonzero) digits is 3265920, while the sum is 52.

The spelling of 1578661630630 in words is "one trillion, five hundred seventy-eight billion, six hundred sixty-one million, six hundred thirty thousand, six hundred thirty".