561616750743346 has 4 divisors (see below), whose sum is σ = 842425126115022. Its totient is φ = 280808375371672.

The previous prime is 561616750743343. The next prime is 561616750743383. The reversal of 561616750743346 is 643347057616165.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 553820397825321 + 7796352918025 = 23533389^2 + 2792195^2 .

It is not an unprimeable number, because it can be changed into a prime (561616750743343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140404187685835 + ... + 140404187685838.

Almost surely, 2^{561616750743346} is an apocalyptic number.

561616750743346 is a deficient number, since it is larger than the sum of its proper divisors (280808375371676).

561616750743346 is a wasteful number, since it uses less digits than its factorization.

561616750743346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280808375371675.

The product of its (nonzero) digits is 228614400, while the sum is 64.

The spelling of 561616750743346 in words is "five hundred sixty-one trillion, six hundred sixteen billion, seven hundred fifty million, seven hundred forty-three thousand, three hundred forty-six".