2140878771 has 12 divisors (see below), whose sum is σ = 3093192648. Its totient is φ = 1426877664.

The previous prime is 2140878739. The next prime is 2140878781. The reversal of 2140878771 is 1778780412.

It is not a de Polignac number, because 2140878771 - 2⁵ = 2140878739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2140878781) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7456 + ... + 65858.

It is an arithmetic number, because the mean of its divisors is an integer number (257766054).

Almost surely, 2^2140878771 is an apocalyptic number.

2140878771 is a deficient number, since it is larger than the sum of its proper divisors (952313877).

2140878771 is a wasteful number, since it uses less digits than its factorization.

2140878771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62482 (or 62479 counting only the distinct ones).

The product of its (nonzero) digits is 175616, while the sum is 45.

The square root of 2140878771 is about 46269.6311958503. The cubic root of 2140878771 is about 1288.8351102927.

The spelling of 2140878771 in words is "two billion, one hundred forty million, eight hundred seventy-eight thousand, seven hundred seventy-one".