140671192979 has 4 divisors (see below), whose sum is σ = 140780157240. Its totient is φ = 140562228720.

The previous prime is 140671192931. The next prime is 140671193011. The reversal of 140671192979 is 979291176041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 979291176041 = 73 ⋅13414947617.

It is a cyclic number.

It is not a de Polignac number, because 140671192979 - 2⁸ = 140671192723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140671192279) 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, 54480194 + ... + 54482775.

It is an arithmetic number, because the mean of its divisors is an integer number (35195039310).

Almost surely, 2^140671192979 is an apocalyptic number.

140671192979 is a deficient number, since it is larger than the sum of its proper divisors (108964261).

140671192979 is a wasteful number, since it uses less digits than its factorization.

140671192979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108964260.

The product of its (nonzero) digits is 1714608, while the sum is 56.

The spelling of 140671192979 in words is "one hundred forty billion, six hundred seventy-one million, one hundred ninety-two thousand, nine hundred seventy-nine".