1321565630630 has 32 divisors (see below), whose sum is σ = 2723280811776. Its totient is φ = 452336297184.

The previous prime is 1321565630621. The next prime is 1321565630641. The reversal of 1321565630630 is 360365651231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16040264 + ... + 16122443.

It is an arithmetic number, because the mean of its divisors is an integer number (85102525368).

Almost surely, 2^{1321565630630} is an apocalyptic number.

1321565630630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1321565630630 is an abundant number, since it is smaller than the sum of its proper divisors (1401715181146).

1321565630630 is a wasteful number, since it uses less digits than its factorization.

1321565630630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32163308.

The product of its (nonzero) digits is 291600, while the sum is 41.

The spelling of 1321565630630 in words is "one trillion, three hundred twenty-one billion, five hundred sixty-five million, six hundred thirty thousand, six hundred thirty".