618963602040 has 96 divisors (see below), whose sum is σ = 2299007674080. Its totient is φ = 141477394176.

The previous prime is 618963602009. The next prime is 618963602041. The reversal of 618963602040 is 40206369816.

618963602040 is a `hidden beast` number, since 6 + 1 + 8 + 9 + 636 + 0 + 2 + 0 + 4 + 0 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618963602041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 122807719 + ... + 122812758.

It is an arithmetic number, because the mean of its divisors is an integer number (23947996605).

Almost surely, 2^618963602040 is an apocalyptic number.

618963602040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

618963602040 is an abundant number, since it is smaller than the sum of its proper divisors (1680044072040).

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

618963602040 is a wasteful number, since it uses less digits than its factorization.

618963602040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245620501 (or 245620494 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 618963602040 in words is "six hundred eighteen billion, nine hundred sixty-three million, six hundred two thousand, forty".