1605902193061 has 4 divisors (see below), whose sum is σ = 1605907528000. Its totient is φ = 1605896858124.

The previous prime is 1605902193059. The next prime is 1605902193131. The reversal of 1605902193061 is 1603912095061.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1605902193061 - 2¹ = 1605902193059 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1605902192999 and 1605902193017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1605902193041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2187111 + ... + 2827588.

It is an arithmetic number, because the mean of its divisors is an integer number (401476882000).

Almost surely, 2^{1605902193061} is an apocalyptic number.

It is an amenable number.

1605902193061 is a deficient number, since it is larger than the sum of its proper divisors (5334939).

1605902193061 is an equidigital number, since it uses as much as digits as its factorization.

1605902193061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5334938.

The product of its (nonzero) digits is 87480, while the sum is 43.

The spelling of 1605902193061 in words is "one trillion, six hundred five billion, nine hundred two million, one hundred ninety-three thousand, sixty-one".