618243206261 has 8 divisors (see below), whose sum is σ = 652206362880. Its totient is φ = 584422453728.

The previous prime is 618243206233. The next prime is 618243206323. The reversal of 618243206261 is 162602342816.

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

It is a de Polignac number, because none of the positive numbers 2^k-618243206261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618243206461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35592101 + ... + 35609466.

It is an arithmetic number, because the mean of its divisors is an integer number (81525795360).

Almost surely, 2^618243206261 is an apocalyptic number.

It is an amenable number.

618243206261 is a deficient number, since it is larger than the sum of its proper divisors (33963156619).

618243206261 is a wasteful number, since it uses less digits than its factorization.

618243206261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71202043.

The product of its (nonzero) digits is 165888, while the sum is 41.

The spelling of 618243206261 in words is "six hundred eighteen billion, two hundred forty-three million, two hundred six thousand, two hundred sixty-one".