140991378455 has 8 divisors (see below), whose sum is σ = 169269813504. Its totient is φ = 112739663200.

The previous prime is 140991378439. The next prime is 140991378497. The reversal of 140991378455 is 554873199041.

It is a happy number.

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

It is not a de Polignac number, because 140991378455 - 2⁴ = 140991378439 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 140991378455.

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, 6668336 + ... + 6689445.

It is an arithmetic number, because the mean of its divisors is an integer number (21158726688).

Almost surely, 2^140991378455 is an apocalyptic number.

140991378455 is a deficient number, since it is larger than the sum of its proper divisors (28278435049).

140991378455 is a wasteful number, since it uses less digits than its factorization.

140991378455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13359897.

The product of its (nonzero) digits is 5443200, while the sum is 56.

The spelling of 140991378455 in words is "one hundred forty billion, nine hundred ninety-one million, three hundred seventy-eight thousand, four hundred fifty-five".