2078661533 has 16 divisors (see below), whose sum is σ = 2304038016. Its totient is φ = 1863449280.

The previous prime is 2078661523. The next prime is 2078661551. The reversal of 2078661533 is 3351668702.

It is a cyclic number.

It is not a de Polignac number, because 2078661533 - 2⁶ = 2078661469 is a prime.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2078661523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45035 + ... + 78647.

It is an arithmetic number, because the mean of its divisors is an integer number (144002376).

Almost surely, 2^2078661533 is an apocalyptic number.

It is an amenable number.

2078661533 is a deficient number, since it is larger than the sum of its proper divisors (225376483).

2078661533 is a wasteful number, since it uses less digits than its factorization.

2078661533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33764.

The product of its (nonzero) digits is 181440, while the sum is 41.

The square root of 2078661533 is about 45592.3407273634. The cubic root of 2078661533 is about 1276.2269942449.

The spelling of 2078661533 in words is "two billion, seventy-eight million, six hundred sixty-one thousand, five hundred thirty-three".