161025007135775 has 12 divisors (see below), whose sum is σ = 199709652517152. Its totient is φ = 128795074309440.

The previous prime is 161025007135757. The next prime is 161025007135789. The reversal of 161025007135775 is 577531700520161.

It is not a de Polignac number, because 161025007135775 - 2¹⁰ = 161025007134751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 623153222 + ... + 623411571.

It is an arithmetic number, because the mean of its divisors is an integer number (16642471043096).

Almost surely, 2^{161025007135775} is an apocalyptic number.

161025007135775 is a deficient number, since it is larger than the sum of its proper divisors (38684645381377).

161025007135775 is a wasteful number, since it uses less digits than its factorization.

161025007135775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1246569970 (or 1246569965 counting only the distinct ones).

The product of its (nonzero) digits is 1543500, while the sum is 50.

The spelling of 161025007135775 in words is "one hundred sixty-one trillion, twenty-five billion, seven million, one hundred thirty-five thousand, seven hundred seventy-five".