618630716340 has 216 divisors, whose sum is σ = 2350797157800. Its totient is φ = 130524258816.

The previous prime is 618630716303. The next prime is 618630716369. The reversal of 618630716340 is 43617036816.

618630716340 is a `hidden beast` number, since 6 + 1 + 8 + 6 + 3 + 0 + 7 + 1 + 634 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 4216164624 + 614414551716 = 64932^2 + 783846^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2583015 + ... + 2812334.

It is an arithmetic number, because the mean of its divisors is an integer number (10883320175).

Almost surely, 2^618630716340 is an apocalyptic number.

618630716340 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

618630716340 is an abundant number, since it is smaller than the sum of its proper divisors (1732166441460).

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

618630716340 is a wasteful number, since it uses less digits than its factorization.

618630716340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5395391 (or 5395379 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The spelling of 618630716340 in words is "six hundred eighteen billion, six hundred thirty million, seven hundred sixteen thousand, three hundred forty".