201686701693 has 16 divisors (see below), whose sum is σ = 221349452544. Its totient is φ = 183011051520.

The previous prime is 201686701691. The next prime is 201686701709. The reversal of 201686701693 is 396107686102.

It is not a de Polignac number, because 201686701693 - 2¹ = 201686701691 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201686701691) 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, 1830228 + ... + 1937293.

It is an arithmetic number, because the mean of its divisors is an integer number (13834340784).

Almost surely, 2^201686701693 is an apocalyptic number.

It is an amenable number.

201686701693 is a deficient number, since it is larger than the sum of its proper divisors (19662750851).

201686701693 is a wasteful number, since it uses less digits than its factorization.

201686701693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3767652.

The product of its (nonzero) digits is 653184, while the sum is 49.

The spelling of 201686701693 in words is "two hundred one billion, six hundred eighty-six million, seven hundred one thousand, six hundred ninety-three".