671563541354 has 8 divisors (see below), whose sum is σ = 1007349808260. Its totient is φ = 335780271936.

The previous prime is 671563541309. The next prime is 671563541377. The reversal of 671563541354 is 453145365176.

It can be written as a sum of positive squares in 2 ways, for example, as 541114716025 + 130448825329 = 735605^2 + 361177^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63839 + ... + 1160690.

Almost surely, 2^671563541354 is an apocalyptic number.

671563541354 is a deficient number, since it is larger than the sum of its proper divisors (335786266906).

671563541354 is a wasteful number, since it uses less digits than its factorization.

671563541354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1498744.

The product of its digits is 4536000, while the sum is 50.

The spelling of 671563541354 in words is "six hundred seventy-one billion, five hundred sixty-three million, five hundred forty-one thousand, three hundred fifty-four".