140218144546 has 4 divisors (see below), whose sum is σ = 210327216822. Its totient is φ = 70109072272.

The previous prime is 140218144529. The next prime is 140218144553. The reversal of 140218144546 is 645441812041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 105534669321 + 34683475225 = 324861^2 + 186235^2 .

It is a super-2 number, since 2×140218144546² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 140218144499 and 140218144508.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35054536135 + ... + 35054536138.

Almost surely, 2^140218144546 is an apocalyptic number.

140218144546 is a deficient number, since it is larger than the sum of its proper divisors (70109072276).

140218144546 is an equidigital number, since it uses as much as digits as its factorization.

140218144546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70109072275.

The product of its (nonzero) digits is 122880, while the sum is 40.

Adding to 140218144546 its reverse (645441812041), we get a palindrome (785659956587).

The spelling of 140218144546 in words is "one hundred forty billion, two hundred eighteen million, one hundred forty-four thousand, five hundred forty-six".