1605324911916 has 24 divisors (see below), whose sum is σ = 4086281594304. Its totient is φ = 486462094480.

The previous prime is 1605324911909. The next prime is 1605324911933. The reversal of 1605324911916 is 6191194235061.

It is a super-2 number, since 2×1605324911916² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6080776050 + ... + 6080776313.

It is an arithmetic number, because the mean of its divisors is an integer number (170261733096).

Almost surely, 2^{1605324911916} is an apocalyptic number.

It is an amenable number.

1605324911916 is an abundant number, since it is smaller than the sum of its proper divisors (2480956682388).

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

1605324911916 is a wasteful number, since it uses less digits than its factorization.

1605324911916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12161552381 (or 12161552379 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 48.

The spelling of 1605324911916 in words is "one trillion, six hundred five billion, three hundred twenty-four million, nine hundred eleven thousand, nine hundred sixteen".