2078827911646 has 4 divisors (see below), whose sum is σ = 3118241867472. Its totient is φ = 1039413955822.

The previous prime is 2078827911623. The next prime is 2078827911647. The reversal of 2078827911646 is 6461197288702.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2078827911647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 519706977910 + ... + 519706977913.

It is an arithmetic number, because the mean of its divisors is an integer number (779560466868).

Almost surely, 2^{2078827911646} is an apocalyptic number.

2078827911646 is a deficient number, since it is larger than the sum of its proper divisors (1039413955826).

2078827911646 is a wasteful number, since it uses less digits than its factorization.

2078827911646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039413955825.

The product of its (nonzero) digits is 16257024, while the sum is 61.

The spelling of 2078827911646 in words is "two trillion, seventy-eight billion, eight hundred twenty-seven million, nine hundred eleven thousand, six hundred forty-six".