1605430641650 has 24 divisors (see below), whose sum is σ = 3257564721264. Its totient is φ = 583792960400.

The previous prime is 1605430641637. The next prime is 1605430641653. The reversal of 1605430641650 is 561460345061.

It is a junction number, because it is equal to n+sod(n) for n = 1605430641598 and 1605430641607.

It is not an unprimeable number, because it can be changed into a prime (1605430641653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1459481852 + ... + 1459482951.

It is an arithmetic number, because the mean of its divisors is an integer number (135731863386).

Almost surely, 2^{1605430641650} is an apocalyptic number.

1605430641650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1605430641650 is an abundant number, since it is smaller than the sum of its proper divisors (1652134079614).

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

1605430641650 is a wasteful number, since it uses less digits than its factorization.

1605430641650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2918964826 (or 2918964821 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 1605430641650 in words is "one trillion, six hundred five billion, four hundred thirty million, six hundred forty-one thousand, six hundred fifty".