2143764561630 has 128 divisors (see below), whose sum is σ = 5509002585600. Its totient is φ = 532269619200.

The previous prime is 2143764561629. The next prime is 2143764561641. The reversal of 2143764561630 is 361654673412.

It is a self number, because there is not a number n which added to its sum of digits gives 2143764561630.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 251581770 + ... + 251590290.

It is an arithmetic number, because the mean of its divisors is an integer number (43039082700).

Almost surely, 2^{2143764561630} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2143764561630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2754501292800).

2143764561630 is an abundant number, since it is smaller than the sum of its proper divisors (3365238023970).

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

2143764561630 is a wasteful number, since it uses less digits than its factorization.

2143764561630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16090.

The product of its (nonzero) digits is 2177280, while the sum is 48.

The spelling of 2143764561630 in words is "two trillion, one hundred forty-three billion, seven hundred sixty-four million, five hundred sixty-one thousand, six hundred thirty".