1605051651660 has 96 divisors (see below), whose sum is σ = 4803921464832. Its totient is φ = 399418990080.

The previous prime is 1605051651649. The next prime is 1605051651673. The reversal of 1605051651660 is 661561505061.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14127334 + ... + 14240493.

It is an arithmetic number, because the mean of its divisors is an integer number (50040848592).

Almost surely, 2^{1605051651660} is an apocalyptic number.

1605051651660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1605051651660 is an abundant number, since it is smaller than the sum of its proper divisors (3198869813172).

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

1605051651660 is a wasteful number, since it uses less digits than its factorization.

1605051651660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28367903 (or 28367901 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 42.

The spelling of 1605051651660 in words is "one trillion, six hundred five billion, fifty-one million, six hundred fifty-one thousand, six hundred sixty".