140152169809 has 8 divisors (see below), whose sum is σ = 141742413000. Its totient is φ = 138562271232.

The previous prime is 140152169779. The next prime is 140152169827. The reversal of 140152169809 is 908961251041.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10171731025 + 129980438784 = 100855^2 + 360528^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140152169809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140152169849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 781057 + ... + 943585.

It is an arithmetic number, because the mean of its divisors is an integer number (17717801625).

Almost surely, 2^140152169809 is an apocalyptic number.

It is an amenable number.

140152169809 is a deficient number, since it is larger than the sum of its proper divisors (1590243191).

140152169809 is an equidigital number, since it uses as much as digits as its factorization.

140152169809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172307.

The product of its (nonzero) digits is 155520, while the sum is 46.

It can be divided in two parts, 14015216 and 9809, that added together give a square (14025025 = 3745²).

The spelling of 140152169809 in words is "one hundred forty billion, one hundred fifty-two million, one hundred sixty-nine thousand, eight hundred nine".