2128727120746 has 16 divisors (see below), whose sum is σ = 3335902188840. Its totient is φ = 1017486500800.

The previous prime is 2128727120731. The next prime is 2128727120791. The reversal of 2128727120746 is 6470217278212.

It can be written as a sum of positive squares in 4 ways, for example, as 2069889341521 + 58837779225 = 1438711^2 + 242565^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2128727120746.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181688161 + ... + 181699876.

Almost surely, 2^{2128727120746} is an apocalyptic number.

2128727120746 is a deficient number, since it is larger than the sum of its proper divisors (1207175068094).

2128727120746 is a wasteful number, since it uses less digits than its factorization.

2128727120746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363388169.

The product of its (nonzero) digits is 1053696, while the sum is 49.

The spelling of 2128727120746 in words is "two trillion, one hundred twenty-eight billion, seven hundred twenty-seven million, one hundred twenty thousand, seven hundred forty-six".