161283025316511 has 64 divisors (see below), whose sum is σ = 277131630182400. Its totient is φ = 90797718387168.

The previous prime is 161283025316507. The next prime is 161283025316573. The reversal of 161283025316511 is 115613520382161.

161283025316511 is a `hidden beast` number, since 1 + 6 + 1 + 2 + 83 + 0 + 2 + 53 + 1 + 6 + 511 = 666.

It is not a de Polignac number, because 161283025316511 - 2² = 161283025316507 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161283025316311) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8687751 + ... + 19951016.

It is an arithmetic number, because the mean of its divisors is an integer number (4330181721600).

Almost surely, 2^{161283025316511} is an apocalyptic number.

161283025316511 is a deficient number, since it is larger than the sum of its proper divisors (115848604865889).

161283025316511 is a wasteful number, since it uses less digits than its factorization.

161283025316511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28639225 (or 28639219 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

Adding to 161283025316511 its reverse (115613520382161), we get a palindrome (276896545698672).

The spelling of 161283025316511 in words is "one hundred sixty-one trillion, two hundred eighty-three billion, twenty-five million, three hundred sixteen thousand, five hundred eleven".