2140135678 has 16 divisors (see below), whose sum is σ = 3516248880. Its totient is φ = 972393856.

The previous prime is 2140135667. The next prime is 2140135691. The reversal of 2140135678 is 8765310412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1084276 + ... + 1086247.

It is an arithmetic number, because the mean of its divisors is an integer number (219765555).

Almost surely, 2^2140135678 is an apocalyptic number.

2140135678 is a deficient number, since it is larger than the sum of its proper divisors (1376113202).

2140135678 is a wasteful number, since it uses less digits than its factorization.

2140135678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2170571.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 2140135678 is about 46261.6004695039. The cubic root of 2140135678 is about 1288.6859760228.

The spelling of 2140135678 in words is "two billion, one hundred forty million, one hundred thirty-five thousand, six hundred seventy-eight".