169945186497 has 16 divisors (see below), whose sum is σ = 228807182592. Its totient is φ = 112190879120.

The previous prime is 169945186409. The next prime is 169945186559. The reversal of 169945186497 is 794681549961.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 169945186497 - 2¹⁸ = 169944924353 is a prime.

It is a super-2 number, since 2×169945186497² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (169945176497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 664138 + ... + 883724.

It is an arithmetic number, because the mean of its divisors is an integer number (14300448912).

Almost surely, 2^169945186497 is an apocalyptic number.

It is an amenable number.

169945186497 is a deficient number, since it is larger than the sum of its proper divisors (58861996095).

169945186497 is a wasteful number, since it uses less digits than its factorization.

169945186497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222108.

The product of its digits is 117573120, while the sum is 69.

The spelling of 169945186497 in words is "one hundred sixty-nine billion, nine hundred forty-five million, one hundred eighty-six thousand, four hundred ninety-seven".