1685343706137 has 144 divisors (see below), whose sum is σ = 3226851788160. Its totient is φ = 837810376704.

The previous prime is 1685343706129. The next prime is 1685343706157. The reversal of 1685343706137 is 7316073435861.

1685343706137 is a `hidden beast` number, since 1 + 6 + 8 + 534 + 3 + 70 + 6 + 1 + 37 = 666.

It is not a de Polignac number, because 1685343706137 - 2³ = 1685343706129 is a prime.

It is a super-2 number, since 2×1685343706137² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1685343706117) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 20982828 + ... + 21062994.

Almost surely, 2^{1685343706137} is an apocalyptic number.

It is an amenable number.

1685343706137 is a deficient number, since it is larger than the sum of its proper divisors (1541508082023).

1685343706137 is a wasteful number, since it uses less digits than its factorization.

1685343706137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80412 (or 80402 counting only the distinct ones).

The product of its (nonzero) digits is 7620480, while the sum is 54.

The spelling of 1685343706137 in words is "one trillion, six hundred eighty-five billion, three hundred forty-three million, seven hundred six thousand, one hundred thirty-seven".