2156080578 has 16 divisors (see below), whose sum is σ = 4312616256. Its totient is φ = 718617680.

The previous prime is 2156080547. The next prime is 2156080631. The reversal of 2156080578 is 8750806512.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101308 + ... + 120728.

It is an arithmetic number, because the mean of its divisors is an integer number (269538516).

Almost surely, 2^2156080578 is an apocalyptic number.

2156080578 is an abundant number, since it is smaller than the sum of its proper divisors (2156535678).

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

2156080578 is a wasteful number, since it uses less digits than its factorization.

2156080578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37929.

The product of its (nonzero) digits is 134400, while the sum is 42.

The square root of 2156080578 is about 46433.6147419087. The cubic root of 2156080578 is about 1291.8784759352.

The spelling of 2156080578 in words is "two billion, one hundred fifty-six million, eighty thousand, five hundred seventy-eight".