2078127261 has 48 divisors (see below), whose sum is σ = 3633610240. Its totient is φ = 1117994400.

The previous prime is 2078127251. The next prime is 2078127283. The reversal of 2078127261 is 1627218702.

It is not a de Polignac number, because 2078127261 - 2⁵ = 2078127229 is a prime.

It is a super-2 number, since 2×2078127261² = 8637225825822724242, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2078127241) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 189786 + ... + 200436.

Almost surely, 2^2078127261 is an apocalyptic number.

2078127261 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2078127261 is a deficient number, since it is larger than the sum of its proper divisors (1555482979).

2078127261 is a wasteful number, since it uses less digits than its factorization.

2078127261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10846 (or 10843 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 2078127261 is about 45586.4811210517. The cubic root of 2078127261 is about 1276.1176433054.

The spelling of 2078127261 in words is "two billion, seventy-eight million, one hundred twenty-seven thousand, two hundred sixty-one".