344855111557 has 4 divisors (see below), whose sum is σ = 376205576256. Its totient is φ = 313504646860.

The previous prime is 344855111519. The next prime is 344855111641. The reversal of 344855111557 is 755111558443.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 755111558443 = 11 ⋅68646505313.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-344855111557 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 344855111557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (344855111507) 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, 15675232333 + ... + 15675232354.

It is an arithmetic number, because the mean of its divisors is an integer number (94051394064).

Almost surely, 2^344855111557 is an apocalyptic number.

It is an amenable number.

344855111557 is a deficient number, since it is larger than the sum of its proper divisors (31350464699).

344855111557 is a wasteful number, since it uses less digits than its factorization.

344855111557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31350464698.

The product of its digits is 1680000, while the sum is 49.

The spelling of 344855111557 in words is "three hundred forty-four billion, eight hundred fifty-five million, one hundred eleven thousand, five hundred fifty-seven".