1643112311354 has 8 divisors (see below), whose sum is σ = 2466325948608. Its totient is φ = 821003661820.

The previous prime is 1643112311333. The next prime is 1643112311359. The reversal of 1643112311354 is 4531132113461.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (1643112311359) 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, 276243212 + ... + 276249159.

It is an arithmetic number, because the mean of its divisors is an integer number (308290743576).

Almost surely, 2^{1643112311354} is an apocalyptic number.

1643112311354 is a deficient number, since it is larger than the sum of its proper divisors (823213637254).

1643112311354 is a wasteful number, since it uses less digits than its factorization.

1643112311354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552493860.

The product of its digits is 25920, while the sum is 35.

The spelling of 1643112311354 in words is "one trillion, six hundred forty-three billion, one hundred twelve million, three hundred eleven thousand, three hundred fifty-four".