344360640421 has 8 divisors (see below), whose sum is σ = 395911635840. Its totient is φ = 293398799568.

The previous prime is 344360640419. The next prime is 344360640473. The reversal of 344360640421 is 124046063443.

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

It is not a de Polignac number, because 344360640421 - 2¹ = 344360640419 is a prime.

It is a super-2 number, since 2×344360640421² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (344360641421) 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, 147287386 + ... + 147289723.

It is an arithmetic number, because the mean of its divisors is an integer number (49488954480).

Almost surely, 2^344360640421 is an apocalyptic number.

It is an amenable number.

344360640421 is a deficient number, since it is larger than the sum of its proper divisors (51550995419).

344360640421 is a wasteful number, since it uses less digits than its factorization.

344360640421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294577283.

The product of its (nonzero) digits is 165888, while the sum is 37.

The spelling of 344360640421 in words is "three hundred forty-four billion, three hundred sixty million, six hundred forty thousand, four hundred twenty-one".