618146145040 has 20 divisors (see below), whose sum is σ = 1437189787404. Its totient is φ = 247258457984.

The previous prime is 618146145011. The next prime is 618146145041. The reversal of 618146145040 is 40541641816.

It can be written as a sum of positive squares in 2 ways, for example, as 437677511184 + 180468633856 = 661572^2 + 424816^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 618146144984 and 618146145002.

It is not an unprimeable number, because it can be changed into a prime (618146145041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3863413327 + ... + 3863413486.

Almost surely, 2^618146145040 is an apocalyptic number.

It is an amenable number.

618146145040 is an abundant number, since it is smaller than the sum of its proper divisors (819043642364).

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

618146145040 is a wasteful number, since it uses less digits than its factorization.

618146145040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7726826826 (or 7726826820 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 40.

Adding to 618146145040 its reverse (40541641816), we get a palindrome (658687786856).

The spelling of 618146145040 in words is "six hundred eighteen billion, one hundred forty-six million, one hundred forty-five thousand, forty".