1605341126634 has 64 divisors (see below), whose sum is σ = 3723512841216. Its totient is φ = 451940350464.

The previous prime is 1605341126621. The next prime is 1605341126651. The reversal of 1605341126634 is 4366211435061.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56857 + ... + 1792739.

It is an arithmetic number, because the mean of its divisors is an integer number (58179888144).

Almost surely, 2^{1605341126634} is an apocalyptic number.

1605341126634 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1605341126634, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1861756420608).

1605341126634 is an abundant number, since it is smaller than the sum of its proper divisors (2118171714582).

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

1605341126634 is a wasteful number, since it uses less digits than its factorization.

1605341126634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1736219.

The product of its (nonzero) digits is 311040, while the sum is 42.

The spelling of 1605341126634 in words is "one trillion, six hundred five billion, three hundred forty-one million, one hundred twenty-six thousand, six hundred thirty-four".