140991378481 has 8 divisors (see below), whose sum is σ = 146008447200. Its totient is φ = 136053318912.

The previous prime is 140991378439. The next prime is 140991378497. The reversal of 140991378481 is 184873199041.

It is a happy number.

140991378481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 140991378481 - 2¹⁷ = 140991247409 is a prime.

It is a super-2 number, since 2×140991378481² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140991378421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19748656 + ... + 19755793.

It is an arithmetic number, because the mean of its divisors is an integer number (18251055900).

Almost surely, 2^140991378481 is an apocalyptic number.

It is an amenable number.

140991378481 is a deficient number, since it is larger than the sum of its proper divisors (5017068719).

140991378481 is an equidigital number, since it uses as much as digits as its factorization.

140991378481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39504575.

The product of its (nonzero) digits is 1741824, while the sum is 55.

The spelling of 140991378481 in words is "one hundred forty billion, nine hundred ninety-one million, three hundred seventy-eight thousand, four hundred eighty-one".