354045345140849 has 4 divisors (see below), whose sum is σ = 354481899204720. Its totient is φ = 353608791076980.

The previous prime is 354045345140783. The next prime is 354045345140863. The reversal of 354045345140849 is 948041543540453.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 354045345140849 - 2²⁰ = 354045344092273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (354045345140899) 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, 218277030719 + ... + 218277032340.

It is an arithmetic number, because the mean of its divisors is an integer number (88620474801180).

Almost surely, 2^{354045345140849} is an apocalyptic number.

It is an amenable number.

354045345140849 is a deficient number, since it is larger than the sum of its proper divisors (436554063871).

354045345140849 is an equidigital number, since it uses as much as digits as its factorization.

354045345140849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436554063870.

The product of its (nonzero) digits is 82944000, while the sum is 59.

The spelling of 354045345140849 in words is "three hundred fifty-four trillion, forty-five billion, three hundred forty-five million, one hundred forty thousand, eight hundred forty-nine".