940109109878 has 4 divisors (see below), whose sum is σ = 1410163664820. Its totient is φ = 470054554938.

The previous prime is 940109109869. The next prime is 940109109881. The reversal of 940109109878 is 878901901049.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 878901901049 = 5479 ⋅160412831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 235027277468 + ... + 235027277471.

It is an arithmetic number, because the mean of its divisors is an integer number (352540916205).

Almost surely, 2^940109109878 is an apocalyptic number.

940109109878 is a deficient number, since it is larger than the sum of its proper divisors (470054554942).

940109109878 is a wasteful number, since it uses less digits than its factorization.

940109109878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470054554941.

The product of its (nonzero) digits is 1306368, while the sum is 56.

The spelling of 940109109878 in words is "nine hundred forty billion, one hundred nine million, one hundred nine thousand, eight hundred seventy-eight".