1605160001551 has 4 divisors (see below), whose sum is σ = 1605187791504. Its totient is φ = 1605132211600.

The previous prime is 1605160001507. The next prime is 1605160001563. The reversal of 1605160001551 is 1551000615061.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1605160001551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1605160001591) 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, 13808155 + ... + 13923916.

It is an arithmetic number, because the mean of its divisors is an integer number (401296947876).

Almost surely, 2^{1605160001551} is an apocalyptic number.

1605160001551 is a deficient number, since it is larger than the sum of its proper divisors (27789953).

1605160001551 is an equidigital number, since it uses as much as digits as its factorization.

1605160001551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27789952.

The product of its (nonzero) digits is 4500, while the sum is 31.

The spelling of 1605160001551 in words is "one trillion, six hundred five billion, one hundred sixty million, one thousand, five hundred fifty-one".