109142052497278 has 8 divisors (see below), whose sum is σ = 173343259848672. Its totient is φ = 51360965881056.

The previous prime is 109142052497267. The next prime is 109142052497279. The reversal of 109142052497278 is 872794250241901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109142052497279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1605030183750 + ... + 1605030183817.

It is an arithmetic number, because the mean of its divisors is an integer number (21667907481084).

Almost surely, 2^{109142052497278} is an apocalyptic number.

109142052497278 is a deficient number, since it is larger than the sum of its proper divisors (64201207351394).

109142052497278 is a wasteful number, since it uses less digits than its factorization.

109142052497278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3210060367586.

The product of its (nonzero) digits is 20321280, while the sum is 61.

The spelling of 109142052497278 in words is "one hundred nine trillion, one hundred forty-two billion, fifty-two million, four hundred ninety-seven thousand, two hundred seventy-eight".