240166445664351 has 4 divisors (see below), whose sum is σ = 320221927552472. Its totient is φ = 160110963776232.

The previous prime is 240166445664347. The next prime is 240166445664371. The reversal of 240166445664351 is 153466544661042.

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

It is not a de Polignac number, because 240166445664351 - 2² = 240166445664347 is a prime.

It is a super-2 number, since 2×240166445664351² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 240166445664291 and 240166445664300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240166445664371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40027740944056 + ... + 40027740944061.

It is an arithmetic number, because the mean of its divisors is an integer number (80055481888118).

Almost surely, 2^{240166445664351} is an apocalyptic number.

240166445664351 is a deficient number, since it is larger than the sum of its proper divisors (80055481888121).

240166445664351 is an equidigital number, since it uses as much as digits as its factorization.

240166445664351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80055481888120.

The product of its (nonzero) digits is 49766400, while the sum is 57.

The spelling of 240166445664351 in words is "two hundred forty trillion, one hundred sixty-six billion, four hundred forty-five million, six hundred sixty-four thousand, three hundred fifty-one".