344455555556666 has 16 divisors (see below), whose sum is σ = 533355880581888. Its totient is φ = 166670373340800.

The previous prime is 344455555556659. The next prime is 344455555556669. The reversal of 344455555556666 is 666655555554443.

It is a happy number.

It is a plaindrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 344455555556593 and 344455555556602.

It is not an unprimeable number, because it can be changed into a prime (344455555556669) 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, 21577655 + ... + 33978026.

It is an arithmetic number, because the mean of its divisors is an integer number (33334742536368).

Almost surely, 2^{344455555556666} is an apocalyptic number.

344455555556666 is a deficient number, since it is larger than the sum of its proper divisors (188900325025222).

344455555556666 is a wasteful number, since it uses less digits than its factorization.

344455555556666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55655717.

The product of its digits is 19440000000, while the sum is 74.

The spelling of 344455555556666 in words is "three hundred forty-four trillion, four hundred fifty-five billion, five hundred fifty-five million, five hundred fifty-six thousand, six hundred sixty-six".