618601380705 has 144 divisors (see below), whose sum is σ = 1359546394752. Its totient is φ = 254676787200.

The previous prime is 618601380667. The next prime is 618601380707. The reversal of 618601380705 is 507083106816.

618601380705 is a `hidden beast` number, since 6 + 1 + 8 + 601 + 38 + 0 + 7 + 0 + 5 = 666.

It is not a de Polignac number, because 618601380705 - 2⁹ = 618601380193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (618601380707) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 4002465 + ... + 4154145.

It is an arithmetic number, because the mean of its divisors is an integer number (9441294408).

Almost surely, 2^618601380705 is an apocalyptic number.

It is an amenable number.

618601380705 is an abundant number, since it is smaller than the sum of its proper divisors (740945014047).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

618601380705 is a wasteful number, since it uses less digits than its factorization.

618601380705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151828 (or 151814 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The spelling of 618601380705 in words is "six hundred eighteen billion, six hundred one million, three hundred eighty thousand, seven hundred five".