140155440505 has 8 divisors (see below), whose sum is σ = 168188803272. Its totient is φ = 112122835968.

The previous prime is 140155440499. The next prime is 140155440541. The reversal of 140155440505 is 505044551041.

It can be written as a sum of positive squares in 4 ways, for example, as 6366284521 + 133789155984 = 79789^2 + 365772^2 .

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 140155440505 - 2¹⁷ = 140155309433 is a prime.

It is a Duffinian 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, 364147 + ... + 642583.

It is an arithmetic number, because the mean of its divisors is an integer number (21023600409).

Almost surely, 2^140155440505 is an apocalyptic number.

It is an amenable number.

140155440505 is a deficient number, since it is larger than the sum of its proper divisors (28033362767).

140155440505 is a wasteful number, since it uses less digits than its factorization.

140155440505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379115.

The product of its (nonzero) digits is 40000, while the sum is 34.

Adding to 140155440505 its reverse (505044551041), we get a palindrome (645199991546).

The spelling of 140155440505 in words is "one hundred forty billion, one hundred fifty-five million, four hundred forty thousand, five hundred five".