1620435233040 has 240 divisors, whose sum is σ = 5542123799232. Its totient is φ = 391349876736.

The previous prime is 1620435233033. The next prime is 1620435233041. The reversal of 1620435233040 is 403325340261.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (240).

It is a junction number, because it is equal to n+sod(n) for n = 1620435232992 and 1620435233010.

It is not an unprimeable number, because it can be changed into a prime (1620435233041) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1772779 + ... + 2526581.

Almost surely, 2^{1620435233040} is an apocalyptic number.

1620435233040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1620435233040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2771061899616).

1620435233040 is an abundant number, since it is smaller than the sum of its proper divisors (3921688566192).

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

1620435233040 is a wasteful number, since it uses less digits than its factorization.

1620435233040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753898 (or 753879 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 33.

The spelling of 1620435233040 in words is "one trillion, six hundred twenty billion, four hundred thirty-five million, two hundred thirty-three thousand, forty".